refactor: rename aim to upm and extract appimage module

crates/upm-core/tests/adapter_smoke.rs

@@ -0,0 +1,14 @@
+use upm_core::adapters::all_adapter_kinds;
+
+#[test]
+fn all_expected_adapter_kinds_are_registered() {
+    let kinds = all_adapter_kinds();
+
+    assert!(kinds.contains(&"github"));
+    assert!(kinds.contains(&"gitlab"));
+    assert!(kinds.contains(&"direct-url"));
+    assert!(kinds.contains(&"zsync"));
+    assert!(kinds.contains(&"sourceforge"));
+    assert!(!kinds.contains(&"appimagehub"));
+    assert!(!kinds.contains(&"custom-json"));
+}