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

.github/workflows/ci-build.yml

@@ -76,6 +76,14 @@ jobs:
           # Enable wireguard by default on linux only
           args: --workspace --features wireguard
 
+      # while disabled by default, this build ensures nothing is broken within
+      # `axum` feature
+      - name: Build with `axum` feature
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --features axum
+
       - name: Build all examples
         if: matrix.os == 'custom-linux'
         uses: actions-rs/cargo@v1
@@ -109,4 +117,4 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: clippy
-          args: --workspace --all-targets --features wireguard -- -D warnings
+          args: --workspace --all-targets --features wireguard,axum -- -D warnings