Create overlay for bot

[antter]

Is your feature request related to a problem? Please describe.
The bot needs to be deployed to openshit

Describe the solution you'd like
The best way to do this is probably to create an overlay for the bot so it's own image can be made and ArgoCD will create its pod.

[harshad16]

• step 1:
  create an directory called
  overlays
  inside it creates two different subdirectory:

1. inference
2. bot

• step 2:
  move the pipfile and pipefile.lock into the inference
  and the Dockerfile of the github-app into the bot

• step 3:
  configure the Dockerfile, specifically for the github-app
  that we can do, by making workingdir: github-app subdirectory,

• step 4:
  configure the .aicoe-ci.yaml

check:
  - overlays-build
overlays_dir: overlays
overlays:
  - name: inference
    build:
      build-stratergy: Source
      base-image: "quay.io/thoth-station/s2i-thoth-ubi8-py38:v0.28.0"
      registry: quay.io
      registry-org: aicoe
      registry-project: github-labeler
      registry-secret: aicoe-pusher-secret

  - name: bot
    build:
      build-stratergy: Dockerfile
      registry: quay.io
      registry-org: aicoe
      registry-project: github-labeler-bot
      registry-secret: aicoe-pusher-secret
      custom-tag: latest