actions: create automatic controller db updating workflow

.github/workflows/scripts/controller-db/.gitignore

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+*.txt

.github/workflows/scripts/controller-db/update-db.py

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+import os
+
+relevant_categories = [
+  "# Mac OS X",
+  "# Linux"
+]
+
+header_lines = []
+new_db_contents = []
+
+def is_relevant_category(line):
+  for category in relevant_categories:
+    if category in line:
+      return True
+  return False
+
+with open("./game_controller_db.txt") as file:
+  lines = file.readlines()
+  finished_header = False
+  processing_section = False
+  for line in lines:
+    if finished_header is False:
+      header_lines.append(line)
+      if line == "\n":
+        finished_header = True
+    if processing_section and line == "\n":
+      processing_section = False
+      new_db_contents.append("\n")
+    if is_relevant_category(line) and processing_section is False:
+      processing_section = True
+      new_db_contents.append(line)
+    elif processing_section:
+      new_db_contents.append(line)
+
+os.remove("./game_controller_db.txt")
+with open("./game_controller_db.txt", "w") as f:
+  f.writelines(header_lines)
+  f.writelines(new_db_contents)