Feat/updating verification flow

[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 PRs

• https://github.com/Real-Dev-Squad/website-my/pull/588
• https://github.com/Real-Dev-Squad/discord-slash-commands/pull/214

Description

This PR contains the following things

1. Schema validation while creating external-account through POST API
2. New API implementation for verifying external-account
3. Updated fixtures and tests

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

https://github.com/Real-Dev-Squad/website-my/assets/56365512/a6928bc9-6b10-40f3-926b-90bb6a58c87c

Tests

Test Coverage

Additional Notes