✨ Audio format conversion (#45)

* ✨ Add audio format option

* 🏗️ I give up, using ffmpeg for conversion

* ♻️ `next_display_order` seems useless

* 📝 Add descriptions about ffmpeg

* 📝 Remove Korean README

since everything here is basically copy-pasted from English version

* ♻️ Make ffmpeg optional

* 🎨 Fmt

* 👷 Split format and lint

* ⚗️ Try to fix check CI

.github/workflows/check.yaml

@@ -29,7 +29,7 @@ jobs:
         uses: cargo-bins/cargo-binstall@main
 
       - name: Install cargo check tools
-        run: cargo binstall --no-confirm cargo-deny cargo-outdated cargo-udeps cargo-audit || true
+        run: cargo binstall --no-confirm --force cargo-deny cargo-outdated cargo-udeps cargo-audit
 
       # remove advisory-db is required to fetch it correctly
       - name: Check

.github/workflows/fmt.yaml

@@ -0,0 +1,31 @@
+name: Fmt
+
+on:
+  pull_request:
+    branches: ["main"]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  lint:
+    name: Fmt
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: rustfmt
+
+      - name: Install nasm
+        uses: ilammy/setup-nasm@v1
+
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Lint
+        run: cargo fmt --all -- --check

.github/workflows/lint.yaml

@@ -20,14 +20,12 @@ jobs:
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
         with:
-          components: rustfmt, clippy
+          components: clippy
 
       - name: Install nasm
         uses: ilammy/setup-nasm@v1
 
       - uses: Swatinem/rust-cache@v2
 
       - name: Lint
-        run: |
-          cargo fmt --all -- --check
-          cargo clippy -- -D warnings
+        run: cargo clippy -- -D warnings