chore(size-limit): Add size checks for metrics and logs (#18573)

Adds 3 size-limit entries for logs, metrics and both combined. I
have some optimizations lined up for reducing bundle size in both but I
need a baseline to see if they actually do any good.

Author: Lms24

.size-limit.js

@@ -112,6 +112,27 @@ module.exports = [
     gzip: true,
     limit: '35 KB',
   },
+  {
+    name: '@sentry/browser (incl. Metrics)',
+    path: 'packages/browser/build/npm/esm/prod/index.js',
+    import: createImport('init', 'metrics'),
+    gzip: true,
+    limit: '27 KB',
+  },
+  {
+    name: '@sentry/browser (incl. Logs)',
+    path: 'packages/browser/build/npm/esm/prod/index.js',
+    import: createImport('init', 'logger'),
+    gzip: true,
+    limit: '27 KB',
+  },
+  {
+    name: '@sentry/browser (incl. Metrics & Logs)',
+    path: 'packages/browser/build/npm/esm/prod/index.js',
+    import: createImport('init', 'metrics', 'logger'),
+    gzip: true,
+    limit: '28 KB',
+  },
   // React SDK (ESM)
   {
     name: '@sentry/react',