feat: add team user management endpoints to api (#1416)

## Description

Adds user management capabilities to our current API. Allows for adding,
removing, listing and updating members of a given team using a valid API
token.

## Related Issue

N/A

## Changes Made

- Added an endpoint for inviting a team member
- Added an endpoint for removing a team member
- Added an endpoint for updating a team member
- Added an endpoint for listing team members

## Testing Performed

Tests were written for this feature request

packages/lib/server-only/public-api/get-all-user-tokens.ts

@@ -8,6 +8,7 @@ export const getUserTokens = async ({ userId }: GetUserTokensOptions) => {
   return await prisma.apiToken.findMany({
     where: {
       userId,
+      teamId: null,
     },
     select: {
       id: true,