Add slash command to invite someone to discord group using dashboard groups link

[pallabez]

Issue Description

Improve accessibility of discord groups.

Expected Behavior

Provide a discord slash command to ping someone dashboard group link.

Typing - /group-invite @pallab <groups option> Response - @pallab click here to be added to the group

Eg -

• If Ankush wants to give Pallab to join group-hangouters
• Then Ankush can simply type /group-invite @pallab group-hangouters
• Which discord bot returns the link to the dashboard site

Current Behavior

None

Reproducibility

• [ ] This issue is reproducible
• [x] This issue is not reproducible

Steps to Reproduce

Severity/Priority

• [ ] Critical
• [ ] High
• [x] Medium
• [ ] Low

Additional Information

Checklist

• [x] I have read and followed the project's code of conduct.
• [x] I have searched for similar issues before creating this one.
• [x] I have provided all the necessary information to understand and reproduce the issue.
• [x] I am willing to contribute to the resolution of this issue.