Add Testing/ and options-pinned.h to gitignore (#7674)

Testing/ is a directory generated by the vscode cmake extension and
options-pined.h is generated as part of the abseil build when fuzztest
is enabled.

Author: tlively

.gitignore

@@ -8,6 +8,9 @@ tags
 # autogenerated during the build
 /src/passes/WasmIntrinsics.cpp
 
+# generated by Abseil when building fuzztest
+options-pinned.h
+
 # File generated by build-js.sh
 /out/
 
@@ -45,10 +48,13 @@ CMakeUserPresets.json
 # macOS
 .DS_Store
 
-# files related to VS Code
+# files related to VSCode
 /.history
 /.vscode
 
+# Generated by VSCode CMake extension
+/Testing
+
 # files related to Emsdk installation
 .emsdk_version