Project website + use Apalis crate for task queue (with redis backend)

instead channel and semaphore queue + upgrade to rust 1.99

crates/steep-server/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "steep-server"
-version = "1.2.0"
+version = "1.3.0"
 edition = "2024"
 
 [dependencies]
@@ -25,4 +25,7 @@ hex = { workspace = true }
 metrics = { workspace = true }
 metrics-exporter-prometheus = { workspace = true }
 devcontainer-rs = { path = "../devcontainer-rs" }
-tempfile = "3"
+tempfile = "3"
+apalis = { workspace = true }
+apalis-redis = { workspace = true }
+redis = { workspace = true }