Add ns.getFunctionRamCost (#526)

src/ScriptEditor/NetscriptDefinitions.d.ts

@@ -6510,6 +6510,16 @@ export interface NS {
    * */
   getResetInfo(): ResetInfo;
 
+  /**
+   * Get the ram cost of a netscript function.
+   *
+   * @remarks
+   * RAM cost: 0 GB
+   *
+   * @param name - The fully-qualified function name, without the leading `ns`. Example inputs: `hack`, `tprint`, `stock.getPosition`.
+   */
+  getFunctionRamCost(name: string): number;
+
   /**
    * Parse command line flags.
    * @remarks