feat: replace axum-auth with tower_http

Slightly more involde in the auth code, but it makes the rest of the
application more straight forward.

Fixes #10

Cargo.toml

@@ -8,9 +8,6 @@ edition = "2021"
 
 [dependencies]
 axum = "0.7"
-axum-auth = { version = "0.7", default-features = false, features = [
-  "auth-basic",
-] }
 axum-client-ip = "0.6"
 base64 = "0.22"
 clap = { version = "4", features = ["derive", "env"] }
@@ -21,6 +18,7 @@ http = "1"
 miette = { version = "7", features = ["fancy"] }
 ring = { version = "0.17", features = ["std"] }
 tokio = { version = "1", features = ["macros", "rt", "process", "io-util"] }
+tower-http = { version = "0.6.2", features = ["validate-request"] }
 tracing = "0.1"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }