fix(sql): replace Mutex with RwLock to enable concurrent SQL execution

[cijiugechu]

When using a Mutex, the MutexGuard will be held until the SQL execution is complete before it is dropped, which is unnecessary and prevents the concurrency capability of the SQL.

Resolves #1935 .

[github-actions]

Package Changes Through 7bd466d

There are 2 changes which include sql with patch, fs-js with patch

Planned Package Versions

The following package releases are the planned based on the context of changes in this pull request.

package	current	next
api-example-js	2.0.1	2.0.2
fs-js	2.0.1	2.0.2
sql	2.0.1	2.0.2

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[FabianLars]

thank you! please also add a changefile similar to https://github.com/tauri-apps/plugins-workspace/blob/30bcf5dcc22e1bb1fb983a8d2887edc39404e6df/.changes/feat-multiple-sql-backends.md

[rap2hpoutre]

Wow thank you for this fix!