Add user apps

[MCausc78]

Description

• Add integrationTypes/context to Interaction
• Add integrationTypesConfig to Application
• Add integrationTypes/contexts to ApplicationCommandBuilder/ApplicationCommandUpdateBuilder
• Deprecate MessageInteraction, and message.interaction
• Interaction.appPermissions is no longer null
• Add tests

PRs:

• https://github.com/discord/discord-api-docs/pull/6723
• https://github.com/discord/discord-api-docs/pull/6726
• https://github.com/discord/discord-api-docs/pull/6727
• https://github.com/discord/discord-api-docs/pull/6728

Breaking changes are made by Discord

Connected issues & other potential problems

Probably nyxx_commands

Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [x] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [x] Ran dart analyze or make analyze and fixed all issues
• [x] Ran dart format --set-exit-if-changed -l 160 ./lib or make format and fixed all issues
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works