Replaced impl_cast with a new and improved trait

With this trait the impl_cast macros are no longer needed, simplifying
everything.
This commit also improved how the actual casting itself is handled.

Cargo.toml

@@ -4,20 +4,20 @@ version = "0.1.0"
 edition = "2021"
 
 [workspace]
-members = ["impl_cast", "google-home"]
+members = ["google-home", "automation_cast"]
 
 [dependencies]
+automation_cast = { path = "./automation_cast/" }
 rumqttc = "0.18"
 serde = { version = "1.0.149", features = ["derive"] }
 serde_json = "1.0.89"
-impl_cast = { path = "./impl_cast", features = ["debug"] }
 google-home = { path = "./google-home" }
 paste = "1.0.10"
 tokio = { version = "1", features = ["rt-multi-thread"] }
 dotenvy = "0.15.0"
 reqwest = { version = "0.11.13", features = [
-	"json",
-	"rustls-tls",
+  "json",
+  "rustls-tls",
 ], default-features = false } # Use rustls, since the other packages also use rustls
 axum = "0.6.1"
 serde_repr = "0.1.10"
@@ -28,8 +28,8 @@ regex = "1.7.0"
 async-trait = "0.1.61"
 futures = "0.3.25"
 eui48 = { version = "1.1.0", default-features = false, features = [
-	"disp_hexstring",
-	"serde",
+  "disp_hexstring",
+  "serde",
 ] }
 thiserror = "1.0.38"
 anyhow = "1.0.68"