[14.0][ADD] report_qweb_text_control: Controls whitespace and special characters in text QWeb reports

[dreispt]

Allow text reports to generate positional text files by providing
precise control over whitespace, special characters, and field formatting.

Use Case

Generate fixed-width text files for legacy systems, bank transfers, or any interface
requiring exact positional formatting with specific characters and spacing.

Example

Template::

<span t-esc="A(partner.name, 20)" />
<span t-esc="N(partner.id, 10)" />
<span t-esc="M(partner.credit_limit, 12)" /> 

Output::

John Doe           00000012340000015000+