UX: Create input loading spinner

[shashilo]

https://react.fluentui.dev/?path=/docs/components-spinner--default#appearance

Shadcn doesn't have a spinner component. We need to create a simple one.

Acceptance Criteria:

• [ ] When a user clicks a submit button, the text should be replaced by a spinner
• [ ] When a user clicks a submit button, the button should be disabled from being clicked again

[jasonetorres]

duplicate, closing and moving forward with other ticket

[ryandotfurrer]

I've begun working on this, view my branch.

The spinner is working as expected, I just need to figure out how to make it's container the same size as what it is being nested in.