esp-config: validation of input

[MabezDev]

Motivations

We should offer some way to validate the user provided options make sense, this may include:

• Ensuring provided integers are between upper and lower ranges (what about multiple ranges?)
• Ensuring that some strings are from a select list of viable options, i.e users could only choose between ["uart", "usb", "usb-serial-jtag"], everything else would be invalid.