Feature Request: Allow to set unique project url

[freshcodex]

Currently the public url for form is long. Let us set a short public url in this format:

https://example.com/p/projectnew (Based on project url slug)

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[BishalN]

we're using project slug as url currently;

currently we're accepting slug from input during project creation, in backend we're adding that with timestamp to create unique slug;

so instead of doing this we could just accept user slug and use that after verifying if its available;

If you want to work on this feel free to send a pr; will merge it

I am quite busy working on other things right now