feat: Schema canonicalization

[Stranger6667]

This PR introduces a canonical schema algebra that transforms a reasonable subset of JSON Schemas into a canonical representation and provides operations such as intersection, union, negation, subtraction + additional reasoning about schema satisfiability.

This work is motivated by two primary use cases:

• data generation in Schemathesis. Specifically for negative data generation and various transformations needed for covering boundary scenarios
• Analyzing compatibility and breaking changes in JSON Schemas (notable in Django Modern REST)

[codspeed-hq]

Merging this PR will not alter performance

✅ 114 untouched benchmarks
🆕 30 new benchmarks

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
🆕	Simulation	canonicalize/deep_allof_chain	N/A	559.3 µs	N/A
🆕	Simulation	canonicalize/many_small_allofs_inside_object	N/A	934 µs	N/A
🆕	Simulation	canonicalize/object_with_properties	N/A	144.4 µs	N/A
🆕	Simulation	canonicalize/wide_anyof_in_allof	N/A	1.3 ms	N/A
🆕	Simulation	canonicalize/geojson	N/A	13.1 ms	N/A
🆕	Simulation	canonicalize/open_api	N/A	115.5 ms	N/A
🆕	Simulation	canonicalize/swagger	N/A	17.2 ms	N/A
🆕	Simulation	canonicalize/fhir	N/A	352.1 ms	N/A
🆕	Simulation	canonicalize/kestra_like/160	N/A	6.4 ms	N/A
🆕	Simulation	canonicalize/kestra_like/320	N/A	12.6 ms	N/A
🆕	Simulation	canonicalize/kestra_like/80	N/A	15.8 ms	N/A
🆕	Simulation	canonicalize/kubernetes	N/A	25.1 ms	N/A
🆕	Simulation	canonicalize/recursive	N/A	4.6 ms	N/A
🆕	Simulation	canonicalize_symbolic/kestra_like/320	N/A	12.8 ms	N/A
🆕	Simulation	canonicalize_symbolic/kubernetes	N/A	24.7 ms	N/A
🆕	Simulation	canonicalize_symbolic/open_api	N/A	52 ms	N/A
🆕	Simulation	emit/fhir	N/A	38.3 ms	N/A
🆕	Simulation	emit/kestra_like/160	N/A	1.2 ms	N/A
🆕	Simulation	emit/kubernetes	N/A	1.8 ms	N/A
🆕	Simulation	emit/open_api	N/A	3.1 ms	N/A
...	...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

---

_{Comparing canonical-schema-foundation (175d2b6) with master (14e1011)}

[codecov]

Codecov Report

❌ Patch coverage is 98.23360% with 129 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.63%. Comparing base (14e1011) to head (175d2b6).

Files with missing lines	Patch %	Lines
crates/jsonschema/src/canonical/emit.rs	96.74%	29 Missing ⚠️
crates/jsonschema/src/canonical/ir/mod.rs	96.72%	13 Missing ⚠️
...chema/src/canonical/algebra/intersect/value_set.rs	96.23%	11 Missing ⚠️
...ates/jsonschema/src/canonical/ir/bound_fraction.rs	96.27%	8 Missing ⚠️
...tes/jsonschema/src/canonical/algebra/negate/mod.rs	97.66%	7 Missing ⚠️
...jsonschema/src/canonical/algebra/negate/numeric.rs	95.58%	6 Missing ⚠️
...jsonschema/src/canonical/leaves/numeric/modular.rs	93.47%	6 Missing ⚠️
crates/jsonschema/src/canonical/mod.rs	88.00%	6 Missing ⚠️
...schema/src/canonical/algebra/intersect/dispatch.rs	98.40%	5 Missing ⚠️
...s/jsonschema/src/canonical/leaves/numeric/bound.rs	97.05%	5 Missing ⚠️
... and 17 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1138      +/-   ##
==========================================
+ Coverage   95.96%   96.63%   +0.66%     
==========================================
  Files         142      208      +66     
  Lines       32269    45931   +13662     
==========================================
+ Hits        30968    44386   +13418     
- Misses       1301     1545     +244     

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