clnrest: add more valid request and response types

Changelog-Added: clnrest can now return successful responses as xml, yaml, or form-encoded in addition to json defined in the 'Accept' header. The same goes for request types defined in the 'Content-type' header.

Author: daywalker90

Cargo.lock

@@ -13,6 +13,10 @@ bytes = "1"
 log = { version = "0.4", features = ['std'] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
+serde_yml = "0.0.12"
+quick-xml = { version = "0.37", features = ["serialize"] }
+roxmltree_to_serde = "0.6"
+serde_qs = "0.15"
 tokio-util = { version = "0.7", features = ["codec"] }
 tokio = { version="1", features = ['io-std', 'rt-multi-thread', 'sync', 'macros', 'io-util'] }
 axum = "0.8"