Gui device manager (#579)

* Created GUI for bootloader

Moved GUI from Flash boot speedup branch to develop branch.

* Fixed needed changes

- renamed file and moved to ```ustilities/device_manager.py``` (everything is now in 1 file)
- GUI now has 2 pages (```About``` and ```Configuration settings```)
- GUI also informs dai.__version__ and dai.__commmit__
- Added button ```Flash DAP``` that runs ```flashDepthaiApplicationPackage``` function
- Changed device finding from ```dai.Device.getAllAvailableDevices()``` to ```dai.XLinkConnection.getAllConnectedDevices()```

* Added menu buttons

Moved buttons for moving between pages to menu bar.

* Menu buttons animations

Added pressed animation to menu buttons.

* Changed button About

Changed button "About" to "Device select" to not confuse users

* Some tweaks and support for devices lacking flash

* Update device_manager.py

Added new button "Flash from usb"

* Update device_manager.py

Changed program so that you connect to the device only once

* Added requirements

Added install_requirements.py and requirements.txt

* Fixed requested changes

Fixed requested changes and also made GUI flashing to work so that you may flash only wanted configs and not all.

* Removed select button

Buttons select removed, GUI works with combo' events now( clicking in the combo box triggers same event as select did).

* Changed widow size

Changed window size and added device name to config tab.

* Update device_manager.py

Fixed values error

* Some fixes and review comments

* Addressed requested changes

Fixed addressed changes.

* Added default to bootloader type

Added a default option which will auto select bootloader type based on device type

* Addressed requested changes

Addressed requested changes.

* Added app icon, changed boot type to AUTO, fixed get bootloader version

# Conflicts:
#	utilities/device_manager.py

* Updated reading/setting USB/POE configs

* Added some type safety, logging progress

* Added progress window when flashing

* Fixed install requirement. Added bootloader selection window

* Added bootloader select popup to flashing bootloader and factory reseting.

* Fixed flashing empty static/dynamic IP, simplifying logic

* Grayed out disabled configs, moved USB configs together with seperator

* Fixed button text overflowing

Co-authored-by: zigakerzan <[email protected]>
Co-authored-by: Martin Peterlin <[email protected]>

Author: 3 people