matt/feat/add-ignore-serde-with

[matthewgapp]

Note

Introduces #[schemars(ignore_serde_with)] to ignore a field’s serde with module when generating schemas, with docs and tests.

• Attributes/Derive:
  • Add #[schemars(ignore_serde_with)] on fields; when set, ignore serde with for schema type selection unless #[schemars(with = ...)]/#[schemars(schema_with = ...)] is provided.
  • Extend FieldAttrs with ignore_serde_with flag; update attribute parsing and is_default accordingly.
• Docs:
  • Update docs/_includes/attributes.md under with to document ignore_serde_with with example and behavior notes.
• Tests:
  • Add serde_only_with_mod and StructIgnoreSerdeWith in schemars/tests/integration/schema_with.rs to verify integer schema when serde with is ignored.
• Misc:
  • Minor refactor of get_meta_ident formatting in schemars_derive/src/attr/schemars_to_serde.rs.

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