Added flashing of Unified Targets from configurations.

[mikeller]

First version, only supports local .config files.

Instructions:

• open firmware flasher tab;
• click 'Load Firmware [Local]', select .config file, click 'Load';
• click 'Load Firmware [Local]', select Unified Target .hex file with support for custom defaults, click 'Load'; or
• select Unified Target .hex file with support for custom defaults from drop downs, click 'Load Firmware [Online]';
• click 'Flash Firmware';
• after flashing, enter CLI, use defaults to activate custom defaults.

Next steps:

• parse the .config file header;
• automatically load a suitable Unified Target .hex file from the selected firmware repository if available;
• make .config files available online;
• automatically apply custom defaults after flashing;
• improve logging.

[spatzengr]

Could the configurator be setup that when you select a board-specific target from a dropdown and click 'Load Firmware [Online]' it loads the correct Unified Target and loads the correct Config files from the Github?

[mikeller]

Since this is a partial double up with #1585, we have decided to use the configuration insertion into the firmware and the local loading of custom builds from this, and then use the automatic download smarts from #1587 on top of this.