Maven endpoint support (#180)

* Basic maven endpoint

* Clean up maven endpoint

* cargo sqlx prepare

* Minor cleanup

* Remove indentation

* Borrow &str instead of &String

* Refactor mod_data-getting

Cargo.lock

@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "actix"
 version = "0.10.0"
@@ -1991,6 +1993,9 @@ dependencies = [
  "sha2",
  "sqlx",
  "thiserror",
+ "xml-rs",
+ "yaserde",
+ "yaserde_derive",
 ]
 
 [[package]]
@@ -4313,3 +4318,25 @@ name = "xml-rs"
 version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b07db065a5cf61a7e4ba64f29e67db906fb1787316516c4e6e5ff0fea1efcd8a"
+
+[[package]]
+name = "yaserde"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc096efbee9ec8fee0600a15bb4fd651ccc14570cb05b6d4dd66b0325e4a0b5e"
+dependencies = [
+ "log",
+ "xml-rs",
+]
+
+[[package]]
+name = "yaserde_derive"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9af81f1d48039716dd825cf4a7d61d39583f8b12705994abb446bae749a977bb"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]