feat(sqlite): add fileMustExist option.

[R-Rajaneesh]

➕ Added a fileMustExist in the database options

What does this PR do?

This PR adds a check from better-sqlite3 fileMustExist in the options of the constructor.
If fileMustExist is set to true then it'll not create a file on default else the file is created

• Documentation or TypeScript types (it's okay to leave the rest blank in this case)
• Code changes

How did you verify your code works?

Needed review of this before doing tests.

[gvilums]

Thank you for the PR. Do I understand correctly that this new option is the inverse of the create option? In that case I don't think we should implement it, as, in my opinion, the convenience of these redundant options is negated by the confusion they cause.

[R-Rajaneesh]

Thank you for the PR. Do I understand correctly that this new option is the inverse of the create option? In that case I don't think we should implement it, as, in my opinion, the convenience of these redundant options is negated by the confusion they cause.

@gvilums, Jarred and Dave told me to create an issue for this, since better-sqlite3 has this options and Bun does not, even tho it says it implements all the feature in better-sqlite3. But I created a PR instead, and create was never an option in better-sqlite3 in the first place.