Support mysql kv-based operation in opendal

[Zheaoli]

After #2815, we can support the most popular relational database by using kv_adapter like MySQL, and SQLite. It would be great to support the KV map storage in the database. the people always use the db as a storage with some simple data structure.

[laipz8200]

I believe it would be highly advantageous to incorporate support for MySQL, while SQLite could potentially be replaced with file system or memory-based solutions, as it appears that these two alternatives are already available.

But it doesn't mean we can't do that :xD

[Xuanwo]

I created #2815 as a fun project, never expecting that anyone would actually use this feature. It's incredible!

I'm fine with those two additions and would be willing to help review the PRs.

[Zheaoli]

@Xuanwo plz assign this issue to me

[suyanhanx]

@Xuanwo plz assign this issue to me

Have fun!

[dqhl76]

resolved by #3170