feat: Add support for editing member flags

[Bastien1533]

#1553

Pull Request Type

• Feature addition
• Bugfix
• Documentation update
• Code refactor
• Tests improvement
• CI/CD pipeline enhancement
• Other: [Replace with a description]

Description

This PR adds the possibility to include flags in the guild member update route. The only editable flag is BYPASSES_VERIFICATION with a value of 1<<2.

Changes

• added flags key to the payload in members http requests
• added flags parameter to modify_guild_member
• added flags parameter to edit in user model

Related Issues

#1553

Test Scenarios

Python Compatibility

• I've ensured my code works on Python 3.10.x
• I've ensured my code works on Python 3.11.x

Checklist

• I've run the pre-commit code linter over all edited files
• I've tested my changes on supported Python versions
• I've added tests for my code, if applicable
• I've updated / added documentation, where applicable