feat(pretask): introduce new pretask functionality for setting up testing environment

ts/tapbundle.classes.pretask.ts

@@ -0,0 +1,19 @@
+import * as plugins from './tapbundle.plugins';
+import { TapTools } from './tapbundle.classes.taptools';
+
+
+export interface IPreTaskFunction {
+  (tapTools?: TapTools): Promise<any>;
+}
+
+export class PreTask {
+  public preTaskFunction: IPreTaskFunction;
+
+  constructor(preTaskFunctionArg: IPreTaskFunction) {
+    this.preTaskFunction = preTaskFunctionArg;
+  }
+
+  public async run () {
+    await this.preTaskFunction(new TapTools(null));
+  }
+}