[💡 Feature]: allow setting custom CACHE_DIR_NAME and allow it to be an absolute path

[adrian-gierakowski]

Is your feature request related to a problem?

In CI my projects source dir resides on a read-only file system. Synpress fails to run as it attempts to run to it's cache dir

Describe the solution you'd like.

I would like to set CACHE_DIR_NAME to a custom path (preferably absolute) to which I am able to write.
This could be done via an env var and\or cli arg

it should probably be named CACHE_DIR_PATH instead

Describe alternatives you've considered.

copy source to writable directory, but that would be wasteful

Additional context

No response