Creating Namespace and Datatype parsers using XML and spec_parsing.py code from Cecille's PR #:

Namespace parser:
- Created new TestSpecParsingNamespace.py unit test to test namespaces
- Updated tests.yaml to include TestSpecParsingNamespace.py
- Updated test_metadata.yaml to include TestSpecParsingNamespace.py and reasoning
- Updated matter_testing support module to include new NamespacePathLocation function for Namespace file locations
- Updated spec_parsing to include new functions build_xml_namespaces and parse_namespace, as well as XmlNamespaces and XmlTags dataclasses

Datatype parser:
- spec_parsing module changes:
-- Enhanced XmlDataTypeComponent with fields for docs, types, and constraints
-- Added support for detecting optional and nullable fields in XML
-- Improved constraint parsing for min/max values and attribute references, basically used for dataTypes
-- Improved some error reporting with specific diagnostic messages when parsing dataTypes

- TestSpecParsingDataType unit test module:
-- Added comprehensive test coverage using Matter 1.4.1 cluster XML files
-- Enhanced test output with detailed statistics on XML field usage
-- Added error reporting with specific diagnostic messages

Additionally:
- Removing unneccessary additions in scripts/tests/requirements.txt file
- Adding change to scripts/setup/constraints.txt as was needed to build env

Updates Cecille's PR project-chip#37527

Author: j-ororke

scripts/setup/constraints.txt

@@ -291,4 +291,5 @@ setuptools==68.0.0
 
 # Higher versions depend on proto-plus, which break
 # nanopb code generation (due to name conflict of the 'proto' module)
-google-api-core==2.17.0
+# google-api-core==2.17.0
+google-api-core==2.11.0

scripts/tests/requirements.txt

@@ -8,5 +8,3 @@ mypy==1.10.1
 pyyaml
 tabulate
 websockets
-gobject-introspection 
-libgirepository1.0-dev