remove: smee-webhook-proxy

[paahaad]

AIM of this PR: remove the smee + other github app conguration.

1. Implemented one route /webhook in express server. which will handle the event send by github.

2. here we can add https://<server-dns-ip>:8080/webhook to github.
   

3. Event from github is recived in header. Perform actions based on the event type.

NOTE: we have to add this webhook to each repo. github will give the name of repo in header. This will allow to @hkirat to select which repo is eligible for bounty.

how to run in test mode.

• we cannot add localhost address to github. so we need proxy to test. I use ngrok.
• steps

1. npm i -g ngrok
2. ngrok http <PORT> poort should be your local host port

[paahaad]

I do not understant the need of admin-web. he is just make entry DB and showing history. plus github webhook can be implemented in admin Nextjs API. I don't think we should be using extra proccess for this. can give me some context for this just the high level implementation.
@devsargam @hkirat

[devsargam]

@paahaad the admin app is currently in crude manner rn. In future, ideally it should allow maintainers to add other maintainers & add their public key, private key in the platform. Also, keep a very good record of what's going on.

[devsargam]

github webhook can be implemented in admin Nextjs API

Yeah but you won't get the great functionality that probot provides.