feat(build): implement release automation (#11)

This PR configures release automation for the project using
@semantic-release

### Changes Made

- Added
[semantic-release](https://github.com/semantic-release/semantic-release)
npm module to devDeps
- Added a github actions workflow to run release against release branch
`main`
- Added semantic-release credit badge to readme

.github/workflows/release.yml

@@ -0,0 +1,35 @@
+name: Release
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read # for checkout
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # to be able to publish a GitHub release
+      issues: write # to be able to comment on released issues
+      pull-requests: write # to be able to comment on released pull requests
+      id-token: write # to enable use of OIDC for npm provenance
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: "lts/*"
+      - name: Install dependencies
+        run: npm clean-install
+      - name: Verify the integrity of provenance attestations and registry signatures for installed dependencies
+        run: npm audit signatures
+      - name: Release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npx semantic-release

README.md

@@ -1,6 +1,6 @@
 # Private Key Converter
 
-![GitHub](https://img.shields.io/github/license/babblebey/private-key-converter)
+![GitHub](https://img.shields.io/github/license/babblebey/private-key-converter) [![semantic-release: angular](https://img.shields.io/badge/semantic--release-angular-e10079?logo=semantic-release)](https://github.com/semantic-release/semantic-release)
 
 This is a tiny project that allows you to convert private key formats through a web interface. Currently, it supports conversion from `PKCS#1` to `PKCS#8`.