feat: add node-sqlite3 connector

[farnabaz]

Implement a new connector for the node-sqlite3 package.

Discussed in nuxt/content#3032 (comment)

I renamed docs/2.connectors/sqlite.md to docs/2.connectors/better-sqlite3.md in order to create another file for the new connector. We need to redirect the old path to the new one.

[pi0]

Do you mind to update tests as well?

Also considering their similarities, I would keep both under same page 2 sections for alternatives (we could also do a small compare)

[codecov]

Codecov Report

Attention: Patch coverage is 61.84211% with 29 lines in your changes missing coverage. Please review.

Please upload report for BASE (main@37d2d3c). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
src/connectors/node-sqlite3.ts	61.84%	29 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #147   +/-   ##
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  Coverage        ?   41.18%           
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  Files           ?       22           
  Lines           ?      828           
  Branches        ?       83           
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  Hits            ?      341           
  Misses          ?      481           
  Partials        ?        6           

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[farnabaz]

I'm not sure about the compare section. Can you take care of it? 🙏

[pi0]

(tests are good, CI is buggy with npm rate limits)