Create `Project` folder automatically

[ChenglongWang]

Discussed in #35

^{Originally posted by ChenglongWang August 5, 2022}
Currently, users need to create Project folder manually.

Maybe it is better to create the folder automatically by a simple command, like strix-init or strix-create etc.
Then copy necessary files to the folder.

Use case:

strix-create --name MyProject

to create a project under current directory.