beef-tool QoL improvements

[HWXLR8]

beef-tool's implementation was hacked together, some basic QoL improvements are in order:

• Change the default toolbar icon
• Add adaptive dark mode according to user's desktop theme
• Disable ability for user to type in the status box (it is currently an input box...)
• Find a way to avoid triggering windows defender. Not sure if this is possible since we are embedding avrdude in the executable

[HWXLR8]

Gonna put this one on the back burner for the time being as I'm going to be quite busy for the next 2-3 months.