Minor improvements for VSCode: (#675)

- chrome launch configuration for webapp added,
  - include `*.tsx` files in `tsconfig.json` so that jest tests inside `*.tsx` files don't show errors about not found jest functions

.vscode/launch.json

@@ -75,5 +75,12 @@
             "console": "integratedTerminal",
             "internalConsoleOptions": "neverOpen"
         },
+        {
+            "type": "pwa-chrome",
+            "request": "launch",
+            "name": "Launch Chrome",
+            "url": "http://localhost:8000",
+            "webRoot": "${workspaceFolder}/webapp"
+        }
     ]
 }

webapp/src/tsconfig.json

@@ -10,6 +10,7 @@
 		}
 	},
 	"include": [
-		"./**/*.ts"
+		"./**/*.ts",
+		"./**/*.tsx"
 	]
 }