chore: migrate to pnpm

Author: bysxx

.github/workflows/test.yml

@@ -9,5 +9,5 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: '18.x'
-      - run: yarn install --frozen-lockfile
-      - run: yarn test
+      - run: pnpm install
+      - run: pnpm test

.gitignore

@@ -21,8 +21,6 @@
 
 # debug
 npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
 .pnpm-debug.log*
 
 # local env files
@@ -32,14 +30,4 @@ yarn-error.log*
 .vercel
 
 # typescript
-*.tsbuildinfo
-
-### yarn ###
-# used Zero-Install
-.yarn/*
-!.yarn/cache
-!.yarn/patches
-!.yarn/plugins
-!.yarn/releases
-!.yarn/sdks
-!.yarn/versions
+*.tsbuildinfo