Keep SQLite plugin up-to-date as part of studio site start command

[fredrikekelund]

Related issues

• Fixes STU-1017

Proposed Changes

• Call keepSqliteIntegrationUpdated as part of the studio site start command.
• Move shared SQLite installation logic to abstract SqliteIntegrationProvider class in common directory.
• Add CliSqliteProvider and ElectronSqliteProvider classes that extend SqliteIntegrationProvider and provide the appropriate paths.
• Move tests to common/lib/tests/sqlite-integration.test.ts

Testing Instructions

1. Run npm run cli:build
2. Remove wp-config.php and wp-content/db.php from a site's folder
3. Run node dist/cli/main.js site start --path PATH_TO_SITE (where PATH_TO_SITE is the path to the site you just removed the files from)
4. Ensure that wp-content/db.php is recreated on disk

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[github-actions]

📊 Performance Test Results

Comparing fc4530d vs trunk

site-editor

Metric	trunk	fc4530d	Diff	Change
load	7720.00 ms	10099.00 ms	+2379.00 ms	🔴 30.8%

site-startup

Metric	trunk	fc4530d	Diff	Change
siteCreation	14151.00 ms	15987.00 ms	+1836.00 ms	🔴 13.0%
siteStartup	5962.00 ms	6014.00 ms	+52.00 ms	🔴 0.9%

---

Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change

[bcotrim]

Code LGTM 👍
Worked as expected on macOS but not on Windows

macOS	Windows

[fredrikekelund]

Thanks for catching that, @bcotrim 👍 I've updated the PR so it works on Windows, too

[bcotrim]

LGTM 👍
I couldn't test the change on Windows due to #2152 but the adjustment for Windows looks good and follows the Studio app approach