chore(deps)!: make algosdk a peer dependency

[drichar]

Summary

This PR makes algosdk a peer dependency, requiring users to install it separately. This change enables better version flexibility and reduces bundle size for consumers who may already have algosdk installed.

Changes

• Package Configuration
  • Moved algosdk from dependencies to peerDependencies with version ^3.0.0
  • Added algosdk@^3.5.2 as a dev dependency for development and testing
• Documentation
  • Updated installation instructions in root README to include algosdk
  • Updated installation instructions in SDK README to include algosdk
  • Removed versioning section from SDK README (breaking changes now follow semver)
• Examples
  • Added algosdk@^3.5.2 to all example projects
  • Updated existing algosdk versions in examples to ^3.5.2

Breaking Change

algosdk is now a peer dependency and must be installed separately:

# Before
npm install @txnlab/nfd-sdk

# After
npm install @txnlab/nfd-sdk algosdk

Users must ensure they have algosdk ^3.0.0 installed alongside @txnlab/nfd-sdk.

Test Plan

• Verify SDK builds successfully with algosdk as peer dependency
• Verify all example projects have algosdk installed
• Verify CI/PR workflows pass