feat: Implement CRS parsing (#16)

* Initial claude-generated CRS parsing

* initial cleanup

* Update submodule

* update conftest

* update type hints

* fix path

* add test with custom CRS

* Add jsonschema dev dep

* cleaner top-level functions in _crs.py

* Add types-jsonschema

* refactor projjson creation

* Add JSON schema validation tests

* use pyproj to find data dir

* extend tests

* better parametrize

* cleaner code

Author: kylebarron

fixtures/geotiff-test-data

@@ -19,10 +19,12 @@ morecantile = ["morecantile>=7.0,<8.0"]
 dev = [
     "affine>=3.0rc1",
     "ipykernel>=7.1.0",
+    "jsonschema>=4.26.0",
     "obstore>=0.8.2",
     "pytest>=9.0.2",
     "pytest-asyncio>=1.3.0",
     "rasterio>=1.4.4",
+    "types-jsonschema>=4.26.0.20260109",
 ]
 
 [build-system]