NETSCRIPT: Expose more enums for player use (#198)

* Add support for enums at other ns layers
* APIWrapper: simplified wrapping algorithm and modified to just use cloneDeep to copy enums instead of recursively wrapping enums as if they were new API layers
* Improve APIWrapper typing
* Changed some typings at RamCostGenerator to allow for enums at different levels without enums needing a ram cost
* Added enums to ns.corporation, removed getter functions that were being used instead.
* Add FactionWorkType for player use
* Add ClassType and CompanyWorkPos enums
* Change netscriptDefinitions to expect members of these new enums where appropriate.

src/Netscript/Environment.ts

@@ -1,4 +1,5 @@
 import { NS } from "../ScriptEditor/NetscriptDefinitions";
+import { ExternalAPI } from "./APIWrapper";
 
 /**
  * The environment in which a script runs. The environment holds
@@ -13,5 +14,5 @@ export class Environment {
   runningFn = "";
 
   /** Environment variables (currently only Netscript functions) */
-  vars: NS | null = null;
+  vars: ExternalAPI<NS> | null = null;
 }