ci: Integrate Eask with CI

.github/workflows/test.yml

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+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    continue-on-error: ${{ matrix.experimental }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        emacs-version:
+          - 26.3
+          - 27.2
+          - 28.2
+          - 29.2
+        experimental: [false]
+        include:
+        - os: ubuntu-latest
+          emacs-version: snapshot
+          experimental: true
+        - os: macos-latest
+          emacs-version: snapshot
+          experimental: true
+        - os: windows-latest
+          emacs-version: snapshot
+          experimental: true
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - uses: jcs090218/setup-emacs@master
+      with:
+        version: ${{ matrix.emacs-version }}
+
+    - uses: emacs-eask/setup-eask@master
+      with:
+        version: 'snapshot'
+
+    - name: Run tests
+      run:
+        make ci

Makefile

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+EMACS ?= emacs
+EASK ?= eask
+
+.PHONY: clean checkdoc lint package install compile test
+
+ci: clean package install compile
+
+package:
+	@echo "Packaging..."
+	$(EASK) package
+
+install:
+	@echo "Installing..."
+	$(EASK) install
+
+compile:
+	@echo "Compiling..."
+	$(EASK) compile
+
+test:
+	@echo "Testing..."
+	$(EASK) test ert ./test/*.el
+
+checkdoc:
+	@echo "Run checkdoc..."
+	$(EASK) lint checkdoc
+
+lint:
+	@echo "Run package-lint..."
+	$(EASK) lint package
+
+clean:
+	$(EASK) clean all