원격 명령어 실행 스크립트 추가

Co-authored-by: Copilot <copilot@github.com>

remote-command/action.yml

@@ -0,0 +1,26 @@
+name: 원격 명령어 실행
+description: 원격 서버에서 명령어를 실행
+
+inputs:
+  host:
+    required: true
+  user:
+    required: true
+  key-path:
+    required: false
+    default: ~/.ssh/deploy_key
+  command:
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      run: |
+        set -eu
+
+        ssh -i "${{ inputs.key-path }}" \
+          "${{ inputs.user }}@${{ inputs.host }}" \
+          'bash -se' << 'EOF'
+        ${{ inputs.command }}
+        EOF