Add linux fetchers to locator

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "locator"
-version = "2.0.1"
+version = "2.0.2"
 edition = "2021"
 
 [dependencies]

src/lib.rs

@@ -112,6 +112,21 @@ pub enum Fetcher {
     #[strum(serialize = "hex")]
     Hex,
 
+    /// Linux Alpine packages.
+    #[strum(serialize = "apk")]
+    #[serde(rename = "apk")]
+    LinuxAlpine,
+
+    /// Linux Debian packages.
+    #[strum(serialize = "deb")]
+    #[serde(rename = "deb")]
+    LinuxDebian,
+
+    /// Linux RPM packages.
+    #[strum(serialize = "rpm-generic")]
+    #[serde(rename = "rpm-generic")]
+    LinuxRpm,
+
     /// Interacts with Maven.
     #[strum(serialize = "mvn")]
     Maven,
@@ -395,4 +410,20 @@ mod tests {
             assert_eq!(package, test, "'package' must match in '{test}");
         }
     }
+
+    #[test]
+    fn serializes_linux_properly() {
+        assert_eq!(
+            r#""rpm-generic""#,
+            serde_json::to_string(&Fetcher::LinuxRpm).unwrap()
+        );
+        assert_eq!(
+            r#""deb""#,
+            serde_json::to_string(&Fetcher::LinuxDebian).unwrap()
+        );
+        assert_eq!(
+            r#""apk""#,
+            serde_json::to_string(&Fetcher::LinuxAlpine).unwrap()
+        );
+    }
 }