Add Changesets configuration and update development documentation (#1964)

Introduce Changesets for versioning and changelog generation, and
enhance development documentation to guide contributors on using
Changesets effectively.

.changeset/README.md

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+# 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/changelog.js

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+const changelogFunctions = {
+  getReleaseLine: async (changeset, type, options) => {
+    let prefix = '🎉';
+    if (type === 'major') {
+      prefix = '🎉';
+    } else if (type === 'minor') {
+      prefix = '🚀';
+    } else if (type === 'patch') {
+      prefix = '🐛';
+    }
+    if (changeset && changeset.summary) {
+      const summary = changeset.summary || '';
+      if (summary.indexOf('Docs') > -1) {
+        prefix = '📝';
+      }
+      if (
+        summary.indexOf('Chore') > -1 ||
+        summary.indexOf('grafana-plugin-sdk-go') > -1 ||
+        summary.indexOf('compiled') > -1
+      ) {
+        prefix = '⚙️';
+      }
+      return [prefix, summary].join(' ');
+    }
+    return [prefix, changeset?.summary].join(' ');
+  },
+  getDependencyReleaseLine: async (changesets, dependenciesUpdated, options) => {
+    return '\n';
+  },
+};
+
+module.exports = changelogFunctions;

.changeset/config.json

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+{
+  "$schema": "https://unpkg.com/@changesets/config@3.0.5/schema.json",
+  "changelog": "./changelog.js",
+  "commit": false,
+  "fixed": [],
+  "linked": [],
+  "access": "restricted",
+  "baseBranch": "main",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}