[ADD] Add a router and a way for a user to delete styles.

I should work soon on the Lilypond part of things.

router.py

@@ -0,0 +1,16 @@
+from nio import RoomMessageText
+import typing
+
+routes = {}
+helptxt = {}
+
+def add_route(cmd: str, hlp: str, func: typing.Callable) -> None:
+    if cmd not in routes.keys():
+        routes[cmd] = func
+        helptxt[cmd] = hlp
+
+async def handle_command(command: str, room: str, event: RoomMessageText, args: list):
+    import utils
+    if command in routes.keys():
+        await routes[command](utils.get_client(), room, event, args)
+    

routes.py

@@ -0,0 +1,28 @@
+from nio import *
+
+async def route_help(client: Client, room: str, event: RoomMessageText, args: list) -> None:
+    import router
+    import utils
+    
+    txt = "Commands for TeXLily:\n"
+
+    for cmd in router.routes.keys():
+        txt += f"\ttxt!{cmd}: {router.helptxt[cmd]}\n"
+
+    await utils.send_msg(client, room, txt)
+
+async def route_delete(client: Client, room: str, event: RoomMessageText, args: list) -> None:
+    if len(args) == 1:
+        import utils
+        import os
+
+        directory = utils.create_user_dir(event.sender)
+
+        file = os.path.join(directory, args[0] + ".sty")
+
+        try:
+            os.remove(file)
+            await utils.send_msg(client, room, "Deleted!")
+        except FileNotFoundError:
+            await utils.send_msg(client, room, f"Couldn't delete style {args[0]}")
+            pass