Create new vehicle form

**Description:**
- [x] As a supplier
I want to create a new vehicle and save as draft or submit to government
so that it can be reviewed and assigned a credit value

**Wireframe:**

**Acceptance Criteria:**

- [x] Given I am a supplier, When I fill out the form and submit a vehicle, then it is added to the db and has a submitted status
- [x] Given I am a supplier, When I fill out the form and save a vehicle as draft, then it is added to the db and has a submitted status
- [x] Given I am a government user I cannot see vehicles in draft status
- [x] given I am a government user, when a vehicle is submitted I can then see it and take action

**Notes:**