deploy: Refuse to run from a user's home directory

[virtuald]

• TBH there's lots of other ways to shoot yourself in the foot but this is an easy one
• Fixes Refuse to run from user's home directory #137

[TheTripleV]

Maybe also add Desktop and Downloads? Those are commonly used as scratchpad directories.

[auscompgeek]

Those directory names can be localised, and even moved on Windows, so actually checking those isn't entirely trivial. At least libraries like platformdirs exist.

[virtuald]

Maybe also add Desktop and Downloads? Those are commonly used as scratchpad directories.

From the original issue:

On Windows if you open cmd I think it starts in your home directory by default? That would try to copy the entire user profile to the roborio, which seems bad.

We can't (and shouldn't) protect the user from everything. The 'default' directory specifically affects users who aren't familiar with the command line and have no idea what "current directory" means. Let's just keep it simple for now.