💡Feature request: Include date and time in exported settings filename

PROBLEM:

When exporting settings from ImprovedTube, the generated file always has the same generic name (for example improvedtube.json). Because of this, when you export settings multiple times, new files overwrite the old ones, and it's difficult to understand which backup is newer.

SOLUTION:

Add the current date and time to the end of the exported settings filename automatically.

Example of the desired filename:
improvedtube-settings-2026-06-18_14-35.json

This will make it much easier to manage multiple backups and understand when each export was made.

ALTERNATIVES:

• Manually rename the file after each export (inconvenient and easy to forget).
• Use the browser's "Save As" dialog every time (still requires manual input).
• Keep using a static filename (current behavior).

RELEVANCE / SCOPE:

This would be useful for all users who regularly export and backup their settings (for example, when testing different configurations, reinstalling the browser, or sharing setups with others). I estimate this could be relevant for 40–60% of users who actively use the backup feature.

SIDE EFFECTS:

• Very minor change. Some users who have scripts or automation expecting a fixed filename might need to update them (this is quite rare).
• Slightly longer filenames.

CONTEXT:

This is a small quality-of-life improvement for the Backup & Reset section. Many users export settings multiple times and currently have to manually rename files to keep them organized.

SHORT Table (Summary)