Feat : Added discordJoinedAt key

[joyguptaa]

Date: 28 March 2024

Developer Name: Joy Gupta

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Issue Ticket Number

• Phase 2

Design Doc

• https://docs.google.com/document/d/1kEA80FHwheR2cPlbWzleHoMzgWB0J4WeMUNe7RlApL4/edit

Dependent PR

• https://github.com/Real-Dev-Squad/website-my/pull/588
• https://github.com/Real-Dev-Squad/website-backend/pull/1990

Description

From this PR we are now sending discordJoinedAt field along with other info which later on gets saved in external-account collection.

Documentation Updated?

• [ ] Yes
• [x] No

Under Feature Flag

• [ ] Yes
• [x] No

Database Changes

• [x] Yes
• [ ] No

Breaking Changes

• [ ] Yes
• [x] No

Development Tested?

• [x] Yes
• [ ] No

Screenshots

NA

Test Coverage