Create workflows for Linux builds and Nix flake builds (#659)

* Create build-linux.yml

* Update build-linux.yml

* build-linux: run as sudo

* Create nix-build.yaml

* Rename nix-build.yaml to build-nix.yaml

* build-nix: rename workflow to 'Nix Flake'

* README: add workflow status badges

.github/workflows/build-linux.yml

@@ -0,0 +1,28 @@
+name: Linux Build
+
+on:
+  push:
+    paths-ignore:
+      - "README.md"
+      - ".gitignore"
+      - "LICENSE"
+  pull_request:
+
+jobs:
+  build_linux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4.1.1
+
+      - name: Install poetry
+        run: pipx install poetry
+
+      - name: "Setup Python"
+        uses: actions/setup-python@v5.0.0
+        with:
+          python-version: 3.12
+          cache: "poetry"
+
+      - name: "Install auto-cpufreq"
+        run: sudo ./auto-cpufreq-installer --install
+      

.github/workflows/build-nix.yaml

@@ -0,0 +1,26 @@
+name: Nix Flake
+
+on:
+  push:
+    paths-ignore:
+      - "README.md"
+      - ".gitignore"
+      - "LICENSE"
+  pull_request:
+
+jobs:
+  build-nix:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Install Nix ❄️"
+        uses: cachix/install-nix-action@v25
+
+      - name: "Nix Cache"
+        uses: DeterminateSystems/magic-nix-cache-action@v3
+
+      - name: "Build Nix Flake ❄️"
+        run: nix build
+
+      

README.md

@@ -1,4 +1,6 @@
 # auto-cpufreq
+[![Linux Build](https://github.com/shadeyg56/auto-cpufreq/actions/workflows/build-linux.yml/badge.svg?event=push)](https://github.com/shadeyg56/auto-cpufreq/actions/workflows/build-linux.yml)
+[![Nix Flake](https://github.com/shadeyg56/auto-cpufreq/actions/workflows/build-nix.yaml/badge.svg?event=push)](https://github.com/shadeyg56/auto-cpufreq/actions/workflows/build-nix.yaml)
 
 Automatic CPU speed & power optimizer for Linux. Actively monitors laptop battery state, CPU usage, CPU temperature, and system load, ultimately allowing you to improve battery life without making any compromises.