add some workflows

.github/dependabot.yml

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+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+# disable until I don't get spam of notification (. before filename)
+
+version: 2
+updates:
+  - package-ecosystem: cargo
+    directory: .
+    schedule:
+      interval: monthly

.github/workflows/format.yml

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+permissions:
+  contents: read
+on:
+  push:
+    branches: [main]
+  pull_request:
+# Spend CI time only on latest ref: https://github.com/jonhoo/rust-ci-conf/pull/5
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+name: Format
+jobs:
+  fmt_clippy:
+    name: Format + Clippy
+    runs-on: ubuntu-latest
+    environment: dev
+    strategy:
+      matrix:
+        rust: [ nightly ]
+    steps:
+      - uses: hecrj/setup-rust-action@v1
+        with:
+          rust-version: ${{ matrix.rust }}
+          components: rustfmt, clippy
+      - uses: actions/checkout@master
+      - name: cargo format + clippy
+        run: cargo fmt --all -- --check && cargo clippy --all

.github/workflows/test.yml

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+permissions:
+  contents: read
+on:
+  push:
+    branches: [main]
+  pull_request:
+# Spend CI time only on latest ref: https://github.com/jonhoo/rust-ci-conf/pull/5
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+name: Test
+jobs:
+  test_linux:
+    name: Test on Ubuntu
+    runs-on: ubuntu-latest
+    environment: dev
+    strategy:
+      matrix:
+        rust: [ nightly ]
+    steps:
+      - uses: hecrj/setup-rust-action@v1
+        with:
+          rust-version: ${{ matrix.rust }}
+      - uses: actions/checkout@master
+      - name: Run tests
+        run: |
+          cargo test --all --all-features

.github/workflows/upload_artifacts.yml

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+name: 'Upload artifacts'
+on:
+  workflow_dispatch:
+permissions:
+  contents: write
+jobs:
+  upload_linux_artifact:
+    runs-on: "ubuntu-latest"
+    strategy:
+      matrix:
+        rust: [ nightly ]
+    steps:
+      - uses: hecrj/setup-rust-action@v1
+        with:
+          rust-version: nightly
+      - uses: actions/checkout@master
+      - name: build libsensors
+        run: |
+          make libsensors
+      - name: build release
+        run: |
+          cargo build --release
+      - name: Upload Linux artifact
+        uses: actions/[email protected]
+        with:
+          name: fan-control
+          path: target/release/fan-control
+
+  # TODO: experiment cross compile: linux -> win
+  upload_linux_artifact:
+    runs-on: "windows-latest"
+    strategy:
+      matrix:
+        rust: [ nightly ]
+    steps:
+      - uses: hecrj/setup-rust-action@v1
+        with:
+          rust-version: nightly
+      - uses: actions/checkout@master
+      - name: build lhm
+        run: |
+          cd LibreHardwareMonitorWrapper
+          dotnet build
+      - name: build release
+        run: |
+          cargo build --release
+      - name: Upload Linux artifact
+        uses: actions/[email protected]
+        with:
+          name: fan-control
+          path: target/release/fan-control