Invalid default project name if destination is .

[rszamszur]

• I have searched the issues of this repo and believe that this is not a duplicate.

Describe the bug

Default project name is invalid when given APP_PATH argument is ..

[rszamszur@draugr:~/sandbox]$ fastapi-mvc new .
🎤 What's your project name?
Do not use dots or spaces in the name; just "A-Za-z0-9-_" please.
   .

Expected behavior

If APP_PATH argument is ., the default project name value should be it's parent directory name:

[rszamszur@draugr:~/sandbox]$ fastapi-mvc new .
🎤 What's your project name?
Do not use dots or spaces in the name; just "A-Za-z0-9-_" please.
   sandbox

To Reproduce

Run: fastapi-mvc new .

Environment

• Python version: 3.9.13
• Operating System and version: Linux draugr 5.15.72 #1-NixOS SMP Wed Oct 5 08:39:44 UTC 2022 x86_64 GNU/Linux
• fastapi-mvc version: 0.18.0

Additional context

Not sure what should happen in such a scenario:

[rszamszur@draugr:/]$ pwd
/
[rszamszur@draugr:/]$ fastapi-mvc new .