feat: Add vscode-clang 0.1.15 extension

Signed-off-by: Mykhailo Kuznietsov <[email protected]>

Author: mkuznyetsov

vscode-clangd/extension.json

@@ -0,0 +1,4 @@
+{
+  "repository": "https://github.com/clangd/vscode-clangd",
+  "revision": "0.1.15"
+}