Revert "remove .codeqlmanifest.json"

This reverts commit 70c4184.

Author: mbaluda

.codeqlmanifest.json

@@ -0,0 +1 @@
+{ "provide": [ "cpp/*/src/qlpack.yml", "cpp/*/test/qlpack.yml", "c/*/src/qlpack.yml", "c/*/test/qlpack.yml", "scripts/generate_modules/queries/qlpack.yml" ] }