Merge pull request #23 from studyplus/github

Add workflow and code owner file

Author: koji-1009

.github/CODEOWNERS

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+* @studyplus/ios

.github/workflows/pr.yml

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+name: PR check
+
+on: pull_request
+
+jobs:
+  danger:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Danger(SwiftLint)
+        uses: docker://ghcr.io/danger/danger-swift-with-swiftlint:3.8.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.swiftlint.yml

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+excluded:
+- Pods
+- vendor/bundle
+- SourcePackages

Dangerfile.swift

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+import Danger
+import Foundation
+
+let danger = Danger()
+
+SwiftLint.lint(.modifiedAndCreatedFiles(directory: nil), inline: true, configFile: ".swiftlint.yml")