Merge pull request #7 from Greatness7/codegen

Sanitize codegen (a bit) by doing it via `proc_macro` crate instead.

Author: Assumeru

Cargo.lock

@@ -17,10 +17,5 @@ default-features = false
 # features = ["esp", "nightly", "simd"]
 features = ["esp"]
 
-[build-dependencies]
-serde_json = "^1.0"
-regex = "^1.10"
-
-[build-dependencies.serde]
-version = "^1.0"
-features = ["derive"]
+[dependencies.codegen]
+path = "./crates/codegen"