Fix: Scheduled function can not run async functions

Since Lua is not Send, this turned out to be a bit more complicated.
In order to make it work the async function needs to be pinned to a
single thread.
It works now, but the implementation looks a bit messy. Not sure it can
be improved through.

Cargo.toml

@@ -43,16 +43,11 @@ enum_dispatch = "0.3.12"
 indexmap = { version = "2.0.0", features = ["serde"] }
 serde_yaml = "0.9.27"
 tokio-cron-scheduler = "0.9.4"
-mlua = { version = "0.9.7", features = [
-  "lua54",
-  "vendored",
-  "macros",
-  "serialize",
-  "async",
-  "send",
-] }
+mlua = { version = "0.9.7", features = ["lua54", "vendored", "macros", "serialize", "async", "send"] }
 once_cell = "1.19.0"
 hostname = "0.4.0"
+tokio-util = { version = "0.7.11", features = ["full"] }
+uuid = "1.8.0"
 
 [patch.crates-io]
 wakey = { git = "https://git.huizinga.dev/Dreaded_X/wakey" }