Add Semantic Bridge docs

[greggyb]

Add docs for Semantic Bridge MVP

• feature docs
  • semantic bridge
  • metric view validation

update api sources for 3.25.1

Update api index to refer to Semantic Bridge

Update Semantic Bridge docs

• add content for Metric View object model overview
  • add references for existing docs
  • add first how-to
    • set up how-to includes for simple script to deserialize a hard-coded metric view: useful for samples

Update toc and index for how-tos for Semantic Bridge

Add Semantic Bridge how tos and final review

• Add detailed how-tos to show off the C# scripting interface.
• Review all code samples.
• Review usage to conform with anti-confusion, verbose nomenclature norms for Semantic Bridge (make sure we always say Metric View or Tabular when talking about ambiguous terms).

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Pull request overview

This PR adds end-to-end documentation for the new Semantic Bridge / Databricks Metric View integration, including feature overviews, scripting how-tos, and API surfacing, and wires them into the existing docs navigation.

Changes:

• Introduces feature docs for Semantic Bridge (overview, Metric View object model, and validation) and links them from the features index and TOC.
• Adds a suite of Semantic Bridge how-tos covering loading, validating, manipulating, importing, and serializing Metric Views via C# scripts, plus shared sample includes.
• Updates API documentation and filter configuration to expose the SemanticBridge scripting surface (while excluding internal namespaces) and refreshes the API index for 3.25.x.

Reviewed changes

Copilot reviewed 22 out of 35 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
content/how-tos/toc.md	Adds a Semantic Bridge section to the how-tos TOC, wiring UID-based includes for the new scripts.
content/how-tos/semantic-bridge-validate-simple-rules.md	New how-to showing creation of simple predicate-based Metric View validation rules with SemanticBridge.MetricView helpers.
content/how-tos/semantic-bridge-validate-default.md	New how-to for running built-in Metric View validation and interpreting diagnostics.
content/how-tos/semantic-bridge-validate-contextual-rules.md	New how-to demonstrating contextual validation rules using IReadOnlyValidationContext for cross-object checks.
content/how-tos/semantic-bridge-serialize.md	New how-to for serializing Metric Views to YAML, saving to disk, and round-tripping modifications.
content/how-tos/semantic-bridge-rename-objects.md	New how-to explaining copy-modify patterns to rename Metric View dimensions (and collections) in bulk.
content/how-tos/semantic-bridge-remove-object.md	New how-to for removing Metric View dimensions by name, in bulk, or by source table, with sample outputs.
content/how-tos/semantic-bridge-load-inspect.md	New how-to for loading a Metric View from YAML and inspecting joins, dimensions, and measures via C# scripts.
content/how-tos/semantic-bridge-import.md	New how-to documenting Metric View import into Tabular models, including diagnostics and placeholder connections.
content/how-tos/semantic-bridge-how-tos.md	Aggregated index page for all Semantic Bridge how-tos, grouped by Getting Started, Validation, Manipulation, and Serialization.
content/how-tos/semantic-bridge-add-object.md	New how-to for constructing and adding a Metric View Dimension to the loaded Metric View model.
content/how-tos/index.md	Extends how-tos index with a Semantic Bridge section listing the new @semantic-bridge-* topics (one link has a UID typo).
content/how-tos/includes/sample-metricview.yaml	Adds a reusable sample Metric View YAML used by several how-to examples.
content/how-tos/includes/sample-metricview.md	Markdown include rendering the sample Metric View YAML inline in docs.
content/how-tos/includes/sample-metricview-deserialize.md	Shared include that deserializes the sample Metric View into the scripting environment for examples.
content/features/toc.md	Adds Semantic Bridge feature tags (overview, object model, validation) to the features TOC.
content/features/semantic-bridge.md	New feature overview for Semantic Bridge, covering UI entry point, translation pipeline, limitations, and terminology.
content/features/semantic-bridge-metric-view-validation.md	New feature doc describing the Metric View validation framework, helper APIs, and rule best practices (one helper link and repeated sample message contain issues).
content/features/semantic-bridge-metric-view-object-model.md	New feature doc detailing the Metric View object model and translation behavior to Tabular (one API xref link is malformed).
content/features/index.md	Adds a Semantic Bridge section to the features index pointing to overview and validation docs.
content/assets/images/features/semantic-bridge/semantic-bridge-metric-view-details.png	New screenshot showing the Databricks details import dialog for Metric View YAML.
content/assets/images/features/semantic-bridge/semantic-bridge-import-success.png	New screenshot illustrating a successful Semantic Bridge import.
content/assets/images/features/semantic-bridge/semantic-bridge-import-success-with-issues.png	New screenshot illustrating a successful import with issues and diagnostics.
content/assets/images/features/semantic-bridge/semantic-bridge-import-failed.png	New screenshot illustrating a failed import and diagnostics.
content/assets/images/features/semantic-bridge/semantic-bridge-file-menu-import.png	New screenshot highlighting the “Import from Metric View YAML” file menu entry.
content/api/index.md	Updates API index metadata date and notes SemanticBridge.dll as a scripting surface alongside TOMWrapper and Shared.
configuration/filterConfig.yml	Updates API filter rules to selectively expose SemanticBridge services and related diagnostics while excluding internal namespaces and types.

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