Add code validation and unit test workflows for PRs

.github/actions/generate-assets/action.yml

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+name: "Generates assets"
+description: "Runs the flutter build command to transform and generate assets for the deployment build"
+
+inputs:
+  GITHUB_TOKEN:
+    description: "The GitHub API public readonly token"
+    required: false
+runs:
+  using: "composite"
+  steps:
+    - name: Fetch packages and generate assets
+      shell: bash
+      env:
+        GITHUB_API_PUBLIC_READONLY_TOKEN: ${{ inputs.GITHUB_TOKEN }}
+      run: |
+        echo "Running \`flutter build\` to generate assets for the deployment build"
+
+        if [ -n "$GITHUB_API_PUBLIC_READONLY_TOKEN" ]; then
+          echo "GITHUB_TOKEN provided, running flutter build with token"
+        else
+          echo "GITHUB_TOKEN not provided or empty, running flutter build without token"
+          unset GITHUB_API_PUBLIC_READONLY_TOKEN
+        fi
+
+        flutter pub get > /dev/null 2>&1
+        flutter build web --release > /dev/null 2>&1 || true
+        rm -rf build/*
+
+        # Run flutter build and capture its output and exit status
+        flutter pub get > /dev/null 2>&1
+        output=$(flutter build web --release)
+        exit_status=$?
+
+        # Check if the exit status is non-zero (indicating an error)
+        if [ $exit_status -ne 0 ]; then
+            echo "Flutter build exited with status $exit_status. Output:"
+            echo "$output"
+            exit $exit_status
+        fi
+        echo "Done fetching packages and generating assets"

.github/workflows/unit-tests-on-pr.yml

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+# Runs unit tests on PRs to ensure the app is working as expected
+name: Run unit tests for packages on PR
+run-name: ${{ github.actor }} is running unit tests on PR 🚀
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+    paths:
+      - "packages/**"
+
+jobs:
+  unit_tests_:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - name: Setup GH Actions
+        uses: actions/checkout@v4
+
+      - name: Get stable flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: "stable"
+
+      - name: Fetch packages and generate assets
+        uses: ./.github/actions/generate-assets
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Test unit_test (unix)
+        id: unit_tests
+        continue-on-error: false
+        timeout-minutes: 15
+        run: |
+          cd packages
+          for package in */; do
+            echo "Running tests for $package"
+            cd "$package"
+            if [ -d "test" ]; then
+              flutter clean
+              rm -rf build/*
+              rm -rf web/src/mm2/*
+              rm -rf web/src/kdfi/*
+              rm -rf web/dist/*
+
+              flutter test
+            else
+              echo "No test directory found in $package"
+            fi
+            cd ..
+          done

.github/workflows/validate-code-guidelines.yml

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+# Rule for running static analysis and code formatting checks on all PRs
+# Runs static analysis and code formatting checks on all PRs to ensure the codebase is clean and consistent
+name: Validate Packages Code Guidelines
+run-name: ${{ github.actor }} is validating code guidelines 🚀
+
+on:
+  pull_request:
+    branches:
+      - "*"
+    paths:
+      - "packages/**"
+
+jobs:
+  validate_packages_code_guidelines:
+    runs-on: macos-latest
+
+    steps:
+      - name: Setup GH Actions
+        uses: actions/checkout@v4
+
+      - name: Get stable flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: "stable"
+
+      - name: Fetch packages and generate assets
+        uses: ./.github/actions/generate-assets
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Validate dart code
+        run: |
+          cd packages
+          for package in */; do
+            echo "Analyzing package: $package"
+            cd "$package"
+            flutter analyze
+            cd ..
+          done