Endpoints to create a company and a garden

[dobro929]

After registration we start an onboarding process where the user can create a company and a garden. Therefore we need 2 more endpoints.

Here is a rough example:

1. Post: /companies
2. Post: /companies/{companyId}/gardens

Both endpoints should be authenticated.

They have the same body for now. We will add an optional address to both later on.

{
    "name": "exampleName"
}

If the object was created successfully, we get the id as return.

[jarkenau]

@dobro929 Not sure if I got that correctly, both endpoints should just accept a name from the request? :thinking:

[dobro929]

@jarkenau Yes, we will extend it later, but make sure you set the user as admin when we create a company.

[jarkenau]

I will probably implement it without requiring admin privileges for now, since @pbrozi is still working on the permission system.