Remove changeset and add style.yml CI workflow

Co-authored-by: aspiers <100738+aspiers@users.noreply.github.com>

Author: Copilot

.changeset/add-lexicon-style-checker.md

@@ -0,0 +1,26 @@
+name: Style Guide Check
+
+on:
+  push:
+    branches: [main, develop]
+  pull_request:
+    branches: [main, develop]
+
+jobs:
+  style:
+    runs-on: blacksmith-4vcpu-ubuntu-2404
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: "20"
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run lexicon style guide checker
+        run: npm run check-lexicon-style