fix: convert cf-kv and excalidraw-libraries from submodules to regular files

- Remove stale cloudflare-worker submodule entry from .gitmodules
- Remove .git dirs from cf-kv and excalidraw-libraries so Git tracks them as regular files
- Fixes 'No url found for submodule path cf-kv' CI error

excalidraw-libraries/key.py

@@ -0,0 +1,28 @@
+import json
+import os
+
+ROOT_DIR = os.path.dirname(os.path.realpath(__file__))
+TEMPLATE_FILE = os.path.join(ROOT_DIR, "excalidraw.json")
+KEY_FILE = os.path.join(ROOT_DIR, "excalidraw-key.json")
+
+
+def main():
+    if os.environ.get("ANALYTICS_PRIVATE_KEY") and os.environ.get(
+        "ANALYTICS_PRIVATE_KEY_ID"
+    ):
+        with open(TEMPLATE_FILE, "r") as template:
+            data = json.load(template)
+
+        data["private_key"] = os.environ.get("ANALYTICS_PRIVATE_KEY").replace(
+            "\\n", "\n"
+        )
+        data["private_key_id"] = os.environ.get("ANALYTICS_PRIVATE_KEY_ID").replace(
+            "\\n", "\n"
+        )
+
+        with open(KEY_FILE, "w") as key:
+            json.dump(data, key, indent=2)
+
+
+if __name__ == "__main__":
+    main()