Add 'third_party/cpp/googleapis/' from commit 'c873fd3aa1'

git-subtree-dir: third_party/cpp/googleapis
git-subtree-mainline: 438050b3d9
git-subtree-split: c873fd3aa1

third_party/cpp/googleapis/.gitignore

@@ -0,0 +1,22 @@
+# Common build output directory names
+.build/
+_build/
+build-output/
+cmake-out/
+
+# Common bazel output directories
+bazel-*
+
+# Backup files for Emacs
+*~
+
+# Ignore IDEA / IntelliJ files
+.idea/
+cmake-build-*/
+
+# This is a staging directory used to upload the documents to gihub.io
+github-io-staging/
+
+# Ignore Visual Studio Code files
+.vsbuild/
+.vscode/