Update .gitignore and refine documentation for execution environment

- Added Cython generated files to .gitignore to prevent unnecessary tracking.
- Updated paths in `inference.c` and `coreml_engine.c` to reflect the correct virtual environment.
- Revised the execution environment documentation to clarify hardware dependency checks and local execution instructions, ensuring accurate guidance for users.
- Removed outdated Docker suitability checks and streamlined the assessment process for test execution environments.

.gitignore

@@ -4,6 +4,9 @@
 *~
 Thumbs.db
 
+# Cython generated
+*.c
+
 # Python
 __pycache__/
 *.py[cod]