Remove AccessKit dynamic wrappers, add download script and build warning if libs are missing.

misc/scripts/install_accesskit.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+
+if __name__ != "__main__":
+    raise SystemExit(f'Utility script "{__file__}" should not be used as a module!')
+
+import os
+import shutil
+import sys
+import urllib.request
+
+sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), "../../"))
+
+
+# Base Godot dependencies path
+# If cross-compiling (no LOCALAPPDATA), we install in `bin`
+deps_folder = os.getenv("LOCALAPPDATA")
+if deps_folder:
+    deps_folder = os.path.join(deps_folder, "Godot", "build_deps")
+else:
+    deps_folder = os.path.join("bin", "build_deps")
+
+# AccessKit
+ac_version = "0.21.1"
+
+# Create dependencies folder
+if not os.path.exists(deps_folder):
+    os.makedirs(deps_folder)
+
+ac_filename = "accesskit-c-" + ac_version + ".zip"
+ac_archive = os.path.join(deps_folder, "accesskit.zip")
+ac_folder = os.path.join(deps_folder, "accesskit")
+
+if os.path.isfile(ac_archive):
+    os.remove(ac_archive)
+
+print(f"Downloading AccessKit {ac_filename} ...")
+urllib.request.urlretrieve(
+    f"https://github.com/godotengine/godot-accesskit-c-static/releases/download/{ac_version}/{ac_filename}",
+    ac_archive,
+)
+if os.path.exists(ac_folder):
+    print(f"Removing existing local AccessKit installation in {ac_folder} ...")
+    shutil.rmtree(ac_folder)
+print(f"Extracting AccessKit {ac_filename} to {ac_folder} ...")
+shutil.unpack_archive(ac_archive, deps_folder)
+os.remove(ac_archive)
+os.rename(os.path.join(deps_folder, "accesskit-c-" + ac_version), ac_folder)
+
+print("AccessKit installed successfully.\n")