chore: bump version to 0.8.0

Breaking: default mode changed from auto to forward.
New: memory footprint stats + dashboard panel.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Cargo.lock

@@ -1143,7 +1143,7 @@ dependencies = [
 
 [[package]]
 name = "numa"
-version = "0.7.3"
+version = "0.8.0"
 dependencies = [
  "arc-swap",
  "axum",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "numa"
-version = "0.7.3"
+version = "0.8.0"
 authors = ["razvandimescu <razvan@dimescu.com>"]
 edition = "2021"
 description = "Portable DNS resolver in Rust — .numa local domains, ad blocking, developer overrides, DNS-over-HTTPS"