Add precompiled Python files to .gitignore.

PiperOrigin-RevId: 436717146
Change-Id: I99198038ce8242d60c28fe97ac8e3710a68f5fe6

Author: saran-t

.gitignore

@@ -8,6 +8,7 @@
 *.out
 *.o
 *.so
+*.so.*
 
 # Exclude editor config
 .vscode/
@@ -19,4 +20,9 @@ build/
 build_cmake/
 
 # Exclude macOS folder attributes
-.DS_Store
+.DS_Store
+
+# Python byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class