Add schema generation

[DavidMStraub]

No description provided.

[Copilot]

Pull request overview

This PR introduces first-class schema generation so datasets containing extension tags stored as URIs can be serialized by automatically adding the necessary HEAD.SCHMA.TAG declarations, and updates related formatting documentation.

Changes:

• Add gedcom7.generate_schema(records) to declare missing URI-tag abbreviations in HEAD.SCHMA.
• Add a comprehensive serializer test suite covering schema generation behavior (idempotence, collision avoidance, placement, corpus parity).
• Refresh docstrings in gedcom7.format to clarify payload vs omitted-structure behavior.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
test/test_serializer.py	Adds new test coverage for schema generation and round-tripping of URI-tag abbreviations.
gedcom7/serializer.py	Implements schema generation and extension-tag invention logic used to support dumps with URI tags.
gedcom7/format.py	Clarifies documentation for format_value/set_value behavior around empty payloads vs omitted structures.
gedcom7/init.py	Exposes generate_schema as a package-level API.

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated no new comments.

Suppressed comments (1)

gedcom7/format.py:36

• The docstring examples use identifiers (Date, DATE, NO_DATE, ADOP) that aren’t defined in this module and also don’t reflect the actual type_id values accepted by format_value (it expects the GEDCOM terms URI keys used in const.payloads). This makes the examples misleading for users of the API.

        format_value(Date(year=2000), DATE)   -> "2000"
        format_value(DatePeriod(), NO_DATE)   -> ""     write an empty payload
        format_value(False, ADOP)             -> None   write no structure

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated no new comments.