Update switch.ts (Imports and Spacing)

1. Fixed tab-size to 2 from 4 spaces.
2. Add Import Statements for `./classes/SwitchContext` and `./classes/SwitchManager`

Author: seriussoft

switch.ts

@@ -1,49 +1,50 @@
-
+import {SwitchContext} from './classes/SwitchContext'
+import {SwitchManager} from './classes/SwitchManager'
 
 
 namespace switchcase {
 
-    /**
-     * Switch Block Container
-     */
-    //% block="switch $value"
-    //% blockId=switchcase_switch_block
-    //% group="Control"
-    //% weight=100
-    //% draggableParameters
-    export function switchBlock(value: any): void {
-        //this is jut a container; actual logic is in codegen
-        //Placeholder for CodeGen
-    }
-
-    /**
-     * Case Block Container
-     */
-    /**********************
-    //% block="case $match"
-    //% blockId=switchcase_case_block
-    //% group="Control"
-    //% weight=90
-    //% draggableParameters
-    //% draggableStatement=true
-    export function caseBlock(match: any): void {
-        //Placeholder for CodeGen
-    }
-    *********************/
-
-    /**
-     * Default-Case Block Container
-     */
-    /**********************
-    //% block="default case"
-    //% blockId=switchcase_default_case_block
-    //% group="Control"
-    //% weight=80
-    //% draggableStatement=true
-    export function defaultCaseBlock(): void {
-        //Placeholder for CodeGen
-    }
-    *********************/
+  /**
+   * Switch Block Container
+   */
+  //% block="switch $value"
+  //% blockId=switchcase_switch_block
+  //% group="Control"
+  //% weight=100
+  //% draggableParameters
+  export function switchBlock(value: any): void {
+    //this is jut a container; actual logic is in codegen
+    
+  }
+
+  /**
+   * Case Block Container
+   */
+  /**********************
+  //% block="case $match"
+  //% blockId=switchcase_case_block
+  //% group="Control"
+  //% weight=90
+  //% draggableParameters
+  //% draggableStatement=true
+  export function caseBlock(match: any): void {
+    //Placeholder for CodeGen
+  }
+  *********************/
+
+  /**
+   * Default-Case Block Container
+   */
+  /**********************
+  //% block="default case"
+  //% blockId=switchcase_default_case_block
+  //% group="Control"
+  //% weight=80
+  //% draggableStatement=true
+  export function defaultCaseBlock(): void {
+    //Placeholder for CodeGen
+  }
+  *********************/
 
 
 }