chore: rename frontend to ui

Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>

.github/workflows/build.yml

@@ -16,9 +16,9 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: '12'
-      - name: frontend
+      - name: ui
         run: |
-          cd frontend
+          cd ui
           npm install
           npm run build
           cd ..

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
 
       - id: build
         run: |
-          cd frontend
+          cd ui
           npm install
           npm run build
           cd ..
@@ -53,4 +53,4 @@ jobs:
           repo_token: ${{ secrets.GITHUB_TOKEN }}
           draft: true
           prerelease: false
-          files: rttys-*.tar.gz
+          files: rttys-*.tar.gz