chore(ui): typing project creation

[sarahscott]

Opened a can of worms with this one:

• Dropdown.svelte & Option.svelte
• Tooltip.svelte
• ProjectCreation.svelte & smaller children components
• Fix bug in ProjectCreation wherein localState store persists after cancel - to reproduce on master or here:
  - Click "New Project"
  - Choose an existing project with multiple branches
  - Select a branch that isn't master
  - Click "Cancel" or close the modal another way
  - Click "New Project" & existing project again - the branches from the first project will still be there even though
  nothing is selected
• Tests pass

[rudolfs]

Great work!

Noted some very minor things, should be good to merge otherwise.

[xla]

Good stuff!!

[FintanH]

Just having a peek

[juliendonck]

Generally looks good to me. Little nitpick, I find the enum name CSSPosition a bit clunky. It's not really a CSSPosition. It's the position of the tooltip.

[xla]

☢ 🌘 😌 🌃

[sarahscott]

@juliendonck the CSSPosition type is just a reference to css's position-setting properties - top, bottom, left, right - for any component to use, not just the Tooltip. Maybe the Tooltip warrants its own type though 🤔