Add axum server to nym-api (#4803)

* Migrate nym-api HTTP server from rocket to axum (#4698)

Migrate endpoints to Axum

* Squashed after PR review

Initial WIP
- bootstrap axum server with same data as rocket
- start axum server alongside rocket
- add routes for circulating-supply, contract-cache, network
- write simple bash validation that migrated APIs return 200
- mark rocket parts of code as deprecated
- start more complicated routes: WIP

Init storage always

Add coconut routes

Add api-status routes

Expand tests

WIP

Migrate unstable APIs with query params

Update bash tests

Add node-status routes

Redirect / to /swagger

Update API tests

Implement graceful shutdown

rustfmt

Fix clippy

* Add ecash routes after rebase

* PR feedback
- add CORS layer
- move logger to common crate
- remove global log filters for nym-api and axum

* Serve OpenAPI for all endpoints (#4761)

* Playing around with swagger

* Generate OpenAPI for /status routes

* Phase out static_routes as strings
- also nest routers in a clearer way

* Generate OpenAPI for /network routes

* Generate OpenAPI for /api-status routes

* Generate OpenAPI for "nym nodes" routes

* Fix some network-monitor routes

* Generate OpenAPI for /ecash routes

* Add utoipa feature to /common mods

* Add OpenAPI for unstable routes

* Fix MixNodeDetails field in models

* Introduce axum feature flag (#4775)

* Add Axum bind_address to config

* Introduce axum feature flag

* Add comment to template.rs

* Add Github action to build wtih `axum` feature

* Refactor server start & shutdown (#4777)

* Clippy: don't forget axum feature

* Refactor router so it's safer

* Implement graceful shutdown

* Nicer pattern matching

* Better Result syntax

nym-api/src/node_status_api/cache/mod.rs

@@ -41,12 +41,13 @@ pub struct NodeStatusCache {
 
 impl NodeStatusCache {
     /// Creates a new cache with no data.
-    fn new() -> NodeStatusCache {
+    pub(crate) fn new() -> NodeStatusCache {
         NodeStatusCache {
             inner: Arc::new(RwLock::new(NodeStatusCacheData::new())),
         }
     }
 
+    #[deprecated(note = "TODO rocket: obsolete because it's used for Rocket")]
     pub fn stage() -> AdHoc {
         AdHoc::on_ignite("Node Status Cache", |rocket| async {
             rocket.manage(Self::new())