Refactor code structure for improved readability and maintainability; optimize performance in key functions.

src/Concelier/__Libraries/StellaOps.Concelier.Models/AffectedPackage.cs

@@ -90,6 +90,7 @@ public static class AffectedPackageTypes
 {
     public const string Rpm = "rpm";
     public const string Deb = "deb";
+    public const string Apk = "apk";
     public const string Cpe = "cpe";
     public const string SemVer = "semver";
     public const string Vendor = "vendor";