ci: utilize github action for nph check (#1257)

.github/workflows/linters.yml

@@ -18,17 +18,10 @@ jobs:
         with:
           fetch-depth: 2  # In PR, has extra merge commit: ^1 = PR, ^2 = base
 
-      - name: Setup NPH
-        # Pin nph to a specific version to avoid sudden style differences.
-        # Updating nph version should be accompanied with running the new version on the fluffy directory.
-        run: |
-          VERSION="v0.6.1"
-          ARCHIVE="nph-linux_x64.tar.gz"
-          curl -L "https://github.com/arnetheduck/nph/releases/download/${VERSION}/${ARCHIVE}" -o ${ARCHIVE}
-          tar -xzf ${ARCHIVE}
-
-      - name: Check style
-        run: |
-          shopt -s extglob  # Enable extended globbing
-          ./nph examples libp2p tests tools *.@(nim|nims|nimble)
-          git diff --exit-code
+      - name: Check `nph` formatting
+        uses: arnetheduck/nph-action@v1
+        with:
+          version: 0.6.1
+          options: "examples libp2p tests tools *.nim*"
+          fail: true
+          suggest: true