feat: add initial experimental Twitch Eventsub support (#5837)

Co-authored-by: nerix <nerixdev@outlook.de>

lib/twitch-eventsub-ws/ast/lib/comment_commands.py

@@ -0,0 +1,37 @@
+from typing import List, Tuple
+
+import logging
+import re
+
+CommentCommands = List[Tuple[str, str]]
+
+log = logging.getLogger(__name__)
+
+
+def parse_comment_commands(raw_comment: str) -> CommentCommands:
+    comment_commands: CommentCommands = []
+
+    def clean_comment_line(line: str) -> str:
+        return line.replace("/", "").replace("*", "").strip()
+
+    comment_lines = [line for line in map(clean_comment_line, raw_comment.splitlines()) if line != ""]
+
+    for comment in comment_lines:
+        parts = comment.split("=", 2)
+        if len(parts) != 2:
+            continue
+
+        command = parts[0].strip()
+        value = parts[1].strip()
+        comment_commands.append((command, value))
+
+    return comment_commands
+
+
+def json_transform(input_str: str, transformation: str) -> str:
+    match transformation:
+        case "snake_case":
+            return re.sub(r"(?<![A-Z])\B[A-Z]", r"_\g<0>", input_str).lower()
+        case other:
+            log.warning(f"Unknown transformation '{other}', ignoring")
+            return input_str