Ramees Mohammed M M

ngrok link problem fixed with proper grep regex and some changes to the setup files

2

deleted the linux and android setup files ,added proper instructions to install php, lolcat, ngrok in requirements.txt, ngrok link issue fixed by changing the grep regex

## Feature 1: Hide api keys in ui - after saving the api keys, it will be hidden from the user https://github.com/stitionai/devika/assets/70532769/9cd0153e-3b49-435f-83e1-cbd1eca24196 closes #510