File naming presets

When exporting multiple files, we can batch change the file location but not the file names.

When having multiple exports for different resolutions or ratios, dynamic naming using placehoders would be great. This could be possible by using placeholders directly in the sequence name (e.g. Sequence-1_%SeqName%) which gets replaces on export (maybe also through a command "replace wildcards in project") or during export with naming presets that can be applied.

On naming conflicts, these exports could be grayed out with a warning symbol, still allowing manual changes.

Placeholders that would be great are: 

• Sequence name
• Resolution
• Aspect Ratio
• Frame rate
• Frame count/Duration
• any (custom) Metadata field
• Custom prefix/suffix

Especially batch exports would benefit from this.