ci: add project fields validator

.github/workflows/validate-project-fields.yml

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+name: Validate Project Fields
+
+on:
+  pull_request:
+    types:
+      - opened
+      - edited
+      - synchronize
+      - reopened
+      - unassigned
+
+permissions:
+  contents: write
+  pull-requests: write
+  id-token: write
+  repository-projects: write
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
+  cancel-in-progress: true
+
+env:
+  AWS_REGION: eu-central-1
+  AWS_ROLE_ARN: arn:aws:iam::332405224602:role/ci
+  EARTHLY_TARGET: docker
+  ECR_REGISTRY: 332405224602.dkr.ecr.eu-central-1.amazonaws.com
+
+jobs:
+  validate-project-fields:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup CI
+        uses: input-output-hk/catalyst-ci/actions/setup@master
+        with:
+          aws_role_arn: ${{ env.AWS_ROLE_ARN }}
+          aws_region: ${{ env.AWS_REGION }}
+          earthly_runner_secret: ${{ secrets.EARTHLY_RUNNER_SECRET }}
+
+      - name: Run Project Fields Validation
+        uses: input-output-hk/catalyst-ci/actions/run@master
+        if: always()
+        continue-on-error: false
+        with:
+          earthfile: ./utilities/project-fields-validator
+          flags: --allow-privileged
+          targets: validate-project-fields
+          target_flags: --GITHUB_REPOSITORY="${{ github.repository }}" --GITHUB_EVENT_NUMBER="${{ github.event.number || '0' }}"
+          runner_address: ${{ secrets.EARTHLY_SATELLITE_ADDRESS }}
+          artifact: false

utilities/project-fields-validator/Earthfile

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+VERSION 0.8
+
+IMPORT github.com/input-output-hk/catalyst-ci/earthly/python:v3.1.7 AS python-ci
+
+test:
+    FROM python-ci+python-base
+    COPY . .
+    DO python-ci+CHECK
+
+validate-project-fields:
+    FROM python-ci+python-base
+    COPY . .
+
+    RUN pip install requests
+
+    ARG PROJECT_NUMBER=102
+    ARG --required GITHUB_REPOSITORY
+    ARG --required GITHUB_EVENT_NUMBER
+
+    ENV PROJECT_NUMBER=${PROJECT_NUMBER}
+    ENV GITHUB_REPOSITORY=${GITHUB_REPOSITORY}
+    ENV GITHUB_EVENT_NUMBER=${GITHUB_EVENT_NUMBER}
+
+    RUN --no-cache --secret GITHUB_TOKEN python3 main.py

utilities/project-fields-validator/README.md

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+# Project fields validator
+
+This module is used to validate the fields of a project.
+
+* auto assign PR creator as  assignee
+* verifies that all project fields are filled out and fail if any are left unfilled.