feat(video): Add post call transcription

[dragonmantank]

Added post call transcription options for Video

Contribution Checklist

• Unit tests!
• Updated CHANGELOG.md
• My name is in CONTRIBUTORS.md

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.93%. Comparing base (64180b0) to head (f23d260).

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #609   +/-   ##
=========================================
  Coverage     98.93%   98.93%           
- Complexity     3607     3610    +3     
=========================================
  Files           542      542           
  Lines          7953     7987   +34     
  Branches        443      443           
=========================================
+ Hits           7868     7902   +34     
  Misses           64       64           
  Partials         21       21           

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[Copilot]

Pull request overview

Adds post-call transcription support to the Video Archive model and expands test coverage with JSON fixtures and new unit tests around transcription request/response fields.

Changes:

• Added transcription-related fields and nested types to Archive plus builder support for request options.
• Added new unit tests and JSON fixtures covering serialization/deserialization of transcription fields.
• Updated CHANGELOG.md to note the new Video transcription capability.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

File	Description
src/main/java/com/vonage/client/video/Archive.java	Adds transcription request/response fields, nested models, and builder methods.
src/test/java/com/vonage/client/video/ArchiveTest.java	Adds tests and helper methods to validate transcription JSON serialization/deserialization.
src/test/resources/com/vonage/client/video/archive-*.json	Adds JSON fixtures for new transcription scenarios.
CHANGELOG.md	Documents the new post-call transcription options.

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[Copilot]

Typo in the changelog section header: 'Unreleasd' should be 'Unreleased' (and ideally match existing section header formatting).

Suggested change

	# Unreleasd
	# [Unreleased]

[Copilot]

Using a primitive boolean here makes it impossible to represent 'unset' once the method is called (and may cause hasTranscription: false to be serialized when callers didn’t intend to send the field). Consider changing the parameter to Boolean, or adding an overload like hasTranscription(Boolean hasTranscription) (or an enableTranscription() convenience method) so API consumers can explicitly control omission vs. false.

Suggested change

	public Builder hasTranscription(boolean hasTranscription) {
	public Builder hasTranscription(boolean hasTranscription) {
	return hasTranscription(Boolean.valueOf(hasTranscription));
	}
	/**
	* (OPTIONAL) Whether the archive will have transcription.
	* Allows {@code null} to represent an unset value, so the field can be omitted.
	*
	* @param hasTranscription {@code Boolean.TRUE} to enable transcription,
	* {@code Boolean.FALSE} to disable it,
	* or {@code null} to leave it unset.
	*
	* @return This builder.
	*/
	public Builder hasTranscription(Boolean hasTranscription) {