Add CMake extension to gitpod

.gitpod.yml

@@ -1,5 +1,6 @@
 image:
   file: .gitpod.Dockerfile
 
-tasks:
-  - init: cmake .
+vscode:
+  extensions:
+    - ms-vscode.cmake-tools@1.5.3:QI2POGDzx7mhyCmZyf/3vg==

README.md

@@ -1,4 +1,3 @@
-[![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/MRPT/mrpt)
 
 <h1 align="center">The MRPT project</h1>
 
@@ -8,6 +7,8 @@ gcc/clang: <a href="https://circleci.com/gh/MRPT/mrpt/tree/develop"><img src="ht
 
 Last Win64 builds: <a href='https://bintray.com/mrpt/mrpt-win-binaries/MRPT-nightly-builds/win64-develop/link'><img src='https://api.bintray.com/packages/mrpt/mrpt-win-binaries/MRPT-nightly-builds/images/download.svg?version=win64-develop'></a> <a href='https://bintray.com/mrpt/mrpt-win-binaries/MRPT-nightly-builds/win64-stable/link'><img src='https://api.bintray.com/packages/mrpt/mrpt-win-binaries/MRPT-nightly-builds/images/download.svg?version=win64-stable'></a>
 
+Workspace: [![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/MRPT/mrpt)
+
 ## 1. Introduction
 <img align="right" src="https://mrpt.github.io/imgs/mrpt-videos-mix2.gif">