feat(tree-explorer): sort dbs in the tree by name (#488)

Author: Anemy

src/explorer/connectionTreeItem.ts

@@ -159,6 +159,9 @@ export default class ConnectionTreeItem
     }
 
     const databases = await this.listDatabases();
+    databases.sort((a: string, b: string) => {
+      return a.localeCompare(b);
+    });
 
     this.cacheIsUpToDate = true;