fix(macro)!: no silently ignored macro attribute

[ptondereau]

Description

Macro options and arguments that parsed and then did nothing are now compile errors that point at the offending token, and class constants inside #[php_impl] accept #[php(vis = ...)]. The migration guide lists each removed option and the new ConstantFlags parameter on ClassBuilder.

Checklist

• I have read the contribution guidelines and the code of conduct.
• I have added tests that prove my code works as expected.
• I have added documentation if applicable.
• I have added a migration guide if applicable.

[coveralls]

Coverage Report for CI Build 35525251129

Coverage decreased (-0.04%) to 69.448%

Details

• Coverage decreased (-0.04%) from the base build.
• Patch coverage: 72 uncovered changes across 16 files (129 of 201 lines covered, 64.18%).
• 4 coverage regressions across 4 files.

Uncovered Changes

Top 10 Files by Coverage Impact	Changed	Covered	%
src/describe/mod.rs	12	1	8.33%
crates/macros/src/impl_.rs	18	8	44.44%
crates/macros/src/lib.rs	28	18	64.29%
src/internal/class.rs	8	0	0.0%
crates/macros/src/enum_.rs	10	5	50.0%
crates/macros/src/interface.rs	21	16	76.19%
src/builders/class.rs	12	7	58.33%
crates/macros/src/impl_interface.rs	10	6	60.0%
src/builders/module.rs	4	0	0.0%
crates/macros/src/class.rs	11	9	81.82%
Total (18 files)	201	129	64.18%

Coverage Regressions

4 previously-covered lines in 4 files lost coverage.

File	Lines Losing Coverage	Coverage
crates/macros/src/function.rs	1	91.45%
crates/macros/src/impl_.rs	1	88.27%
crates/macros/src/interface.rs	1	93.06%
src/describe/mod.rs	1	85.0%

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Coverage Stats

Relevant Lines:	13924
Covered Lines:	9670
Line Coverage:	69.45%
Coverage Strength:	52.35 hits per line

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💛 - Coveralls

[codspeed]

Merging this PR will not alter performance

✅ 30 untouched benchmarks

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_{Comparing fix/macro-silent-attributes (a22bbb6) with master (1bfc9aa)}