Add a CI/CD Pipeline using Pipelinit

.github/workflows/pipelinit.javascript.format.yaml

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+# Generated with pipelinit 0.2.2
+# https://pipelinit.com/
+name: Format JavaScript
+on:
+  pull_request:
+    paths:
+      - '**.js'
+      - '**.ts'
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '16'
+          cache: 'yarn'
+      - run: yarn
+      - run: npx prettier --no-error-on-unmatched-pattern --check "**/*.js" "**/*.ts"
+

.github/workflows/pipelinit.javascript.lint.yaml

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+# Generated with pipelinit 0.2.2
+# https://pipelinit.com/
+name: Lint JavaScript
+on:
+  pull_request:
+    paths:
+      - '**.js'
+      - '**.ts'
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '16'
+          cache: 'yarn'
+      - run: yarn
+      - run: npx eslint --ext .js --ext .ts .
+        tsc:
+    name: Typecheck Typescript
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '16'
+        cache: 'yarn'
+      - run: yarn
+      - run: NPM_CONFIG_YES=true npx -p typescript -c 'tsc --init && tsc --noEmit'

.github/workflows/pipelinit.javascript.sast.yaml

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+# Generated with pipelinit 0.2.2
+# https://pipelinit.com/
+name: SAST
+on:
+  pull_request:
+    paths:
+      - '**.js'
+      - '**.ts'
+jobs:
+  semgrep:
+    name: Scan
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: returntocorp/semgrep-action@v1
+        with:
+          config: >-
+            p/ci