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.ts

@@ -1825,7 +1825,11 @@ export const ns: InternalAPI<NSFull> = {
     lastNodeReset: Player.lastNodeReset,
     currentNode: Player.bitNodeN,
     ownedAugs: new Map(Player.augmentations.map((aug) => [aug.name, aug.level])),
-    ownedSF: new Map(Player.sourceFiles),
+    ownedSF: new Map(
+      [...Player.activeSourceFiles].filter(([__, activeLevel]) => {
+        return activeLevel > 0;
+      }),
+    ),
     bitNodeOptions: {
       ...Player.bitNodeOptions,
       sourceFileOverrides: new Map(Player.bitNodeOptions.sourceFileOverrides),