chore: add changesets cli (#193)

* chore: add @changesets/cli and update package scripts

* chore: update release script and GitHub Actions workflow

* Apply suggestion from @JLekawa

* chore: update CODEOWNERS to include @Redocly/technical-writers

---------

Co-authored-by: Jacek Łękawa <164185257+JLekawa@users.noreply.github.com>

Author: n0rahh

.changeset/README.md

@@ -0,0 +1,7 @@
+# Changesets
+
+Hello and welcome!
+This folder has been automatically generated by `@changesets/cli`, a build tool that works with multi-package repos, or single-package repos to help you version and publish your code.
+You can find the full documentation for it [in our repository](https://github.com/changesets/changesets).
+
+We have a quick list of common questions to get you started engaging with this project in [our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md).

.changeset/config.json

@@ -0,0 +1,10 @@
+{
+  "$schema": "https://unpkg.com/@changesets/config@3.1.2/schema.json",
+  "changelog": "@changesets/cli/changelog",
+  "commit": false,
+  "fixed": [["openapi-sampler"]],
+  "linked": [],
+  "access": "public",
+  "baseBranch": "main",
+  "updateInternalDependencies": "patch"
+}

.changeset/vast-paths-invite.md

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+---
+"openapi-sampler": patch
+---
+
+Added changeset flow for streamlined versioning and releases.
+

.github/CODEOWNERS

@@ -1 +1,3 @@
-* @Redocly/keyboard-warriors
+.changeset/ @Redocly/technical-writers
+
+* @Redocly/keyboard-warriors

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+      contents: write
+      pull-requests: write
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+      - name: Setup Node.js
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
+        with:
+          node-version: 24.11.1
+          cache: "npm"
+          registry-url: "https://registry.npmjs.org"
+      - name: Install Dependencies
+        run: npm ci
+
+      - name: Create Release Pull Request or Publish to npm
+        id: changesets
+        uses: changesets/action@v1
+        with:
+          publish: npm run release
+          commit: "chore: 🔖 release new versions"
+          title: "chore: 🔖 release new versions"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}