Add LibSQL support to SQLite generator

[mbezhanov]

Closes #304.

Let me know if you require any adjustments or further details about the implementation.

Some of the more notable changes:

1. Switched from index placeholders to regular placeholders during table filter processing to work around the following issue with the LibSQL driver:

   Arguments do not match SQL parameters: value for parameter $1 not found

2. Adjusted ATTACH statements to make sure they use an unquoted DSN string to avoid the following LibSQL error:

   unable to execute attach database 'one' as one: SQL string could not be parsed: unsupported statement: attach database 'one' as one

3. Added runtime modification of golden files for LibSQL tests (the idea is to reuse the original SQLite golden files, only tweaking the recorded DriverName, as they are otherwise identical).