Fix a bunch of scripting related stuff.

src/NetscriptFunctions/Singularity.ts

@@ -1218,5 +1218,19 @@ export function NetscriptSingularity(
 
       return Object.assign({}, crime);
     },
+    isFocused: function (): boolean {
+      helper.updateDynamicRam("isFocused", getRamCost("isFocused"));
+      helper.checkSingularityAccess("isFocused", 2);
+      return player.focus;
+    },
+    setFocus: function (focus: any): void {
+      helper.updateDynamicRam("isFocused", getRamCost("isFocused"));
+      helper.checkSingularityAccess("isFocused", 2);
+      if (focus === true) {
+        player.startFocusing();
+      } else if (focus === false) {
+        player.stopFocusing();
+      }
+    },
   };
 }