Add codium-extensions script.

.local/bin/codium-extensions

@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+
+import argparse
+import pathlib
+import subprocess
+import typing
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description="Small Tauon remote control CLI")
+    parser.add_argument(
+        "action",
+        choices=["install", "list", "list-saved", "save"],
+        help="Which action should be performed.",
+    )
+    parser.add_argument(
+        "-f",
+        "--file",
+        help="Use a different file than $HOME/.config/codium-extensions.txt.",
+        default=pathlib.Path.home().joinpath(".config/codium-extensions.txt"),
+    )
+    args = parser.parse_args()
+
+    if args.action == "install":
+        print("Installing saved extensions")
+        for extension in get_saved_extensions(args.file):
+            subprocess.run(["codium", "--install-extension", extension])
+    elif args.action == "list":
+        print("Listing installed extensions")
+        print("\n".join(get_installed_extensions()))
+    elif args.action == "list-saved":
+        with open(args.file, "r") as file:
+            print("Listing saved extensions")
+            print(file.read())
+    elif args.action == "save":
+        with open(args.file, "w") as file:
+            extensions = get_installed_extensions()
+            file.writelines("\n".join(extensions))
+            print(f"Wrote {len(extensions)} extensions to {args.file}")
+
+
+def get_installed_extensions() -> typing.List[str]:
+    extensions = subprocess.run(
+        [
+            "codium",
+            "--list-extensions",
+        ],
+        capture_output=True,
+        check=True,
+        encoding="utf8",
+    )
+    return extensions.stdout.splitlines()
+
+
+def get_saved_extensions(path: str) -> typing.List[str]:
+    with open(path, "r") as file:
+        return file.read().splitlines()
+
+
+if __name__ == "__main__":
+    main()