Add `Int32` serializer

• Add Int32 serializer.

Bump version of `analyzer`

• Bump version of analyzer.

Remove JSON from error message, fix generation

• Remove JSON from DeserializationError message to prevent data accidentally
  leaking into logs. The JSON is still available on the DeserializationError
  object.
• Fix generation for fields that are Function types that are declared
  separately, for example in a mixin defined in another source file, and use
  named or positional parameters.

Fix mixin generation

• Fix support for generating enum mixins for Dart 3. Instead of triggering mixin generation with abstract class TestEnumMixin = Object with _$TestEnumMixin it must now be triggered with typedef TestEnumMixin = _$TestEnumMixin.

Records support

• Add support for value types with record fields. Serialization with records is not yet supported.
• Fix generator failure due to top level record field.
• Migrate benchmark and examples to null safety.
• Remove pre-null-safe test cases.
• Remove analyzer plugin.
• Remove reference to @nullable annotation from failure-to-instantiate message.

Dart 3 support, Uint8ListSerializer

• Add Uint8ListSerializer.
• Generate Dart-3-compatible code if needed.
• Stop using deprecated analyzer API.
• Fix codegen for optional fields with $ in the name.

Analyzer version, codegen fix

• Increase minimum version of analyzer.
• Fix generation with the type Never.

Deserialization fix, minor improvements

• Fix generated deserialization code when there is a manually written builder
  with nullable fields.
• Drop dev dependency on quiver.
• Disable all linting of generated code.
• Change generated hash code implementation so it formats better when there are
  many fields.

Bump version of `analyzer`

• Prepare for breaking analyzer changes.
• Bump version of analyzer.

Bump version of `analyzer`

• Bump version of analyzer.