feat: add SQL query empty result monitoring

[kwrx]

⚠️⚠️⚠️ Since we do not accept all types of pull requests and do not want to waste your time. Please be sure that you have read pull request rules:
https://github.com/louislam/uptime-kuma/blob/master/CONTRIBUTING.md#can-i-create-a-pull-request-for-uptime-kuma

Tick the checkbox if you understand [x]:

• I have read and understand the pull request rules.

Description

• Maybe fixes Monitor SQL query result #2342

Hello @louislam and everyone!

This little PR tries to introduce new features for handling the results of SQL monitoring queries. Specifically, it ensures that an empty result can return an error, while other outcomes will not. The implementation is designed to avoid breaking changes with the current version.

Specifically, the implementation ensures:

• Compatibility with existing configurations: The feature introduces an optional frontend flag, ensuring backward compatibility.
• Enhanced user control: Provides more meaningful feedback beyond simply confirming query execution.

Changes Implemented

• Backend: Introduced error handling for empty result in monitoring queries.
• Database: Added a new column to the monitor table using Knex migration.
• Frontend: Added a checkbox in EditMonitor.vue to enable error checking functionality.
• Localization: Added translations for both English and Italian (my native language).

What's Missing

• Tests: Test cases need to be written, if needed.
• Localization: Translations are missing for other supported languages.

Additional Notes

This is my first pull request in an open-source project, so please let me know if I’ve made any mistakes or if improvements can be made.

Thanks

Type of change

Please delete any options that are not relevant.

• User interface (UI)
• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Checklist

• My code follows the style guidelines of this project
• I ran ESLint and other linters for modified files
• I have performed a self-review of my own code and tested it
• I have commented my code, particularly in hard-to-understand areas (including JSDoc for methods)
• My changes generates no new warnings
• My code needed automated testing. I have added them (this is optional task)

Screenshots (if any)

[CommanderStorm]

Hi, thanks for the PR.
Unfortunately, I think accepting this PR would make future work like migrating mssql towards the inital work laid out here a lot more difficult

• Monitor Conditions #5048

I think a better way would be to migrate the individual monitor you need to this form.
=> would you be open to migrating the monitor you need to this alternative instead?