Add verbose mode and flag to the installer

**Is your feature request related to a problem? Please describe.**
I find that the addition of a verbose flag to the installer, which shows the complete output of the commands ran would really help with debugging installation issues.

**Describe the solution you'd like**
Add a verbose flag to the installer that shows the entire output of the commands ran.

**Describe alternatives you've considered**
X

**Additional context**
I could do this one.