Add validation for project name

[codyjlin]

Is your feature request related to a problem? Please describe.
A follow up to #1752 - I think project name should definitely be validated early on. Otherwise could run into an error message (#1752 (comment)) that is not obviously related to the project name.

Describe the solution you'd like
Validation upon feast apply that checks the project name. Can use the name validation function here.

Describe alternatives you've considered
There's probably more validation coverage to be done, and it could be done at a later time if there are higher priorities at the moment.

Additional context
@tedhtchang to take this simple addition on per #1752 (comment)