Use github actions to add deploy key to repo? - github-actions

Question

I'm trying to find out if it's possible to add a deploy key with GitHub actions. I have already generates key with ssh-keygen and tried to add it manually which works. But I would like to add my generated key with GitHub actions as well.
In other words I want to do this "GitHub -> repo -> settings -> deploy keys -> add deploy key (the generated key during workflow)" but I want to do it with GitHub actions if it's possible.
This is the workflow that i have created so far:
on:
# Triggers the workflow on push or pull request events but only for the master branch
push:
branches: [ main ]
# Allows you to run this workflow manually from the Actions tab
workflow_dispatch:
# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
# This workflow contains a single job called "build"
build:
# The type of runner that the job will run on
runs-on: ubuntu-latest
if: github.event.repository.name != 'testar-deploy-key'
# Steps represent a sequence of tasks that will be executed as part of the job
steps:
# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
- uses: actions/checkout#v2
- name: Create deploy key
run: |
# Deploy key
ssh-keygen -m PEM -t rsa -b 4096 -C "mail#mail.com" -o -f id_rsa
#Here i want in someway to add my generated key to the current github repository.
git config --local user.email "action#github.com"
git config --local user.name "GitHub Action"
git add .
git commit -m "Generate SSH"
# Push changes
- name: Push changes
uses: ad-m/github-push-action#master
with:
branch: main
github_token: ${{ secrets.GITHUB_TOKEN }}