refactor(exe-unit): renamed before method to setup and added `tea…

…rdown` method

BREAKING CHANGE: The current use of the `WorkContext.before()` method
should be replaced with`ExeUnit.setup()`

src/activity/exe-unit/exe-unit.ts

@@ -109,6 +109,11 @@ export class ExeUnit {
       });
   }
 
+  /**
+   * This function initializes the exe unit by deploying the image to the remote machine
+   * and preparing and running the environment.
+   * This process also includes running setup function if the user has defined it
+   */
   async setup(): Promise<Result[] | void> {
     try {
       let state = await this.fetchState();
@@ -147,6 +152,16 @@ export class ExeUnit {
     }
   }
 
+  /**
+   * This function starts the teardown function if the user has defined it.
+   * It is run before the machine is destroyed.
+   */
+  async teardown(): Promise<void> {
+    if (this.options?.teardown) {
+      await this.options.teardown(this);
+    }
+  }
+
   private async deployActivity() {
     const result = await this.executor
       .execute(
@@ -204,12 +219,6 @@ export class ExeUnit {
       .finally(() => clearTimeout(timeoutId));
   }
 
-  async teardown(): Promise<void> {
-    if (this.options?.teardown) {
-      await this.options.teardown(this);
-    }
-  }
-
   private async setupActivity() {
     if (this.options?.setup) {
       await this.options.setup(this);