feat!: Improve lua module registration

Instead of having to call all the module registration functions in one
place it is possible for each module to register itself in a global registry.
During startup all the all the modules will be registered
automatically.

This does currently have one weakness, to need to ensure that the crate
is linked.

Cargo.lock

@@ -100,6 +100,7 @@ dependencies = [
  "git-version",
  "google_home",
  "hostname",
+ "inventory",
  "mlua",
  "reqwest",
  "rumqttc",
@@ -128,6 +129,7 @@ dependencies = [
  "dyn-clone",
  "eui48",
  "google_home",
+ "inventory",
  "mlua",
  "reqwest",
  "rumqttc",
@@ -151,6 +153,7 @@ dependencies = [
  "futures",
  "google_home",
  "indexmap",
+ "inventory",
  "mlua",
  "rumqttc",
  "serde",
@@ -967,6 +970,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "inventory"
+version = "0.3.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc61209c082fbeb19919bee74b176221b27223e27b65d781eb91af24eb1fb46e"
+dependencies = [
+ "rustversion",
+]
+
 [[package]]
 name = "io-uring"
 version = "0.7.10"