Add Elixir CI workflow configuration (#1)

* Add Elixir CI workflow configuration

* CI Changes

* CI Changes

* Add write permissions

* Remove cache

Author: noahd1

.github/workflows/elixir.yml

@@ -0,0 +1,38 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+name: Elixir CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  build:
+
+    name: Build and test
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Elixir
+      uses: erlef/setup-beam@v1
+      with:
+        elixir-version: '1.17.3'
+        otp-version: '26.2.5'
+    - name: Install dependencies
+      run: mix deps.get
+    - name: Run tests with coverage
+      run: mix lcov
+    - uses: qltysh/qlty-action/coverage@ea1eaf434a27bf50cd544153084fbb11c52aaf84
+      with:
+        oidc: true
+        files: cover/lcov.info

mix.exs

@@ -5,7 +5,7 @@ defmodule Sample.MixProject do
     [
       app: :sample,
       version: "0.1.0",
-      elixir: "~> 1.19",
+      elixir: "~> 1.15",
       start_permanent: Mix.env() == :prod,
       deps: deps(),
       test_coverage: [