Option to Insert Silence between Chunk Outputs in WAV Export

[GalenMarek14]

Is your feature request related to a problem? Please describe.
Current "Export to WAV" function just concatenates chunk outputs without space between them so transition between sentences becomes too fast sometimes.

Describe the solution you'd like
I'd like to see a slider or input field that allows users to add a configurable amount of silence (in seconds or milliseconds) between chunk outputs. This would also need to be reflected in the SRT export.

Describe alternatives you've considered
I don't have alternatives.

Additional context
Additionally, there is also a wonderful subtitle generator on word level alignment. It would enhance subtitle generation.
https://github.com/echogarden-project/echogarden

Thank you so much for your project.