v1.2.4 - Invites refactored, Users soft-delete, clean-up

v1.2.4

• Invite system refactored. Current process had bug preventing multiple invites to the same new email.
• Deleted providers/hCaptcha.ts. Moved contents to routes/middleware/hCaptcha.ts
• Added Users.deletedAt. Users model soft-delete (paranoid) enabled.
• Removed Users.inviteKey
• Added GroupsUsers.inviteKey
• Major changes to /auth/invite, also route updated to /auth/sign-up/with-invite
• Major changes to /groups/:groupID/users/invite
• Major changes to /groups/:groupID/users/:userID/resend-invitation-email
• Removed generate command
• Email.generate moved to helpers
• generateJWT moved to helpers