API: Return active SF levels in getOwnedSourceFiles and ResetInfo.ownedSF (#1761)

* DOCUMENTATION: Clarify getOwnedSourceFiles when player overrides active levels of SFs
* Return Player.activeSourceFiles instead of Player.sourceFiles
* Get rid of zeroes in the map

src/NetscriptFunctions/Singularity.ts

@@ -88,7 +88,13 @@ export function NetscriptSingularity(): InternalAPI<ISingularity> {
       }
       return res;
     },
-    getOwnedSourceFiles: () => () => [...Player.sourceFiles].map(([n, lvl]) => ({ n, lvl })),
+    getOwnedSourceFiles: () => () => {
+      return [...Player.activeSourceFiles]
+        .filter(([__, activeLevel]) => {
+          return activeLevel > 0;
+        })
+        .map(([n, lvl]) => ({ n, lvl }));
+    },
     getAugmentationFactions: (ctx) => (_augName) => {
       helpers.checkSingularityAccess(ctx);
       const augName = getEnumHelper("AugmentationName").nsGetMember(ctx, _augName);