Update CONTRIBUTING.md guide
Update CONTRIBUTING.md guide

To reflect the structure changes and add web-clients setup guides.
ahmgeek/manshar,RashaHussein/manshar,mjalajel/manshar,mjalajel/manshar,manshar/manshar,RashaHussein/manshar,RashaHussein/manshar,ahmgeek/manshar,ahmgeek/manshar,mjalajel/manshar,ahmgeek/manshar,manshar/manshar,manshar/manshar,RashaHussein/manshar,mjalajel/manshar,manshar/manshar