Add .codeqlmanifest.json back

Author: mbaluda

c/.codeqlmanifest.json

@@ -0,0 +1,3 @@
+{ "provide": [
+    "*/src/qlpack.yml",
+    "*/test/qlpack.yml" ] }

cpp/.codeqlmanifest.json

@@ -0,0 +1,3 @@
+{ "provide": [
+    "*/src/qlpack.yml",
+    "*/test/qlpack.yml" ] }