feat(create-group): create group form

[MinT-Napkin]

Includes:

• Dropdown component
• TagInput component
• ImagePicker dependency

Notes:

• Currently commented out 'Flatlist' in the FeedScreen to test the create group form, but that change has not been committed.

[nappalion]

I think the file name should use underscores or camel case "create_group_form". (kind of like node_modules)

Overall, all the base functionality works very well, and I love the use of GroupContext. The components "Dropdown" and "TagInput" will also be great for other parts of the app. As for styling, Luke mentioned we'd have a UI designer soon, so we can wait on changing any of the looks.

[MinT-Napkin]

note: on IOS the image picker doesn't work but I think the IOS build is based off of main without the expo image picker plugin. possible IOS rebuild after merging this branch

[MinT-Napkin]

altered createGuild post request since insertGuild was very similar (insertGuild post request now deleted)

most of it should be the same except the createGuild code in the guilds file in the controllers folder

[MinT-Napkin]

banner and icon variables in the guild object are also empty when creating a guild, not sure what to use them for

[lxkedinh]

Functionality looks good so far! There are just a few things that need to be fixed. Also, remember to look through your code and clean up any console logs and commented-out code for debugging since we don't want that in production code.