wireless_serial app: Added TODOs.
wireless_serial app: Added TODOs.

markncooper/burnerlight,attackcrow/wixel,attackcrow/wixel,pdg137/wixel-sdk,markncooper/burnerlight,novagannas/wixel-xDrip,pdg137/wixel-sdk,raduiliescu/wixel-DexDrip,StephenBlackWasAlreadyTaken/wixel-xDrip,jamorham/wixel-xDrip,jamorham/wixel-xDrip,raduiliescu/wixel-DexDrip,sm6xmm/wixel-xDrip,jamorham/wixel-xDrip,raduiliescu/wixel-DexDrip,sm6xmm/wixel-xDrip,markncooper/burnerlight,novagannas/wixel-xDrip,Cagier/wixel-xDrip,kevinwchang/wixel-sdk,StephenBlackWasAlreadyTaken/wixel-xDrip,saercnap/wixel-DexDrip,pdg137/wixel-sdk,saercnap/wixel-DexDrip,attackcrow/wixel,sm6xmm/wixel-xDrip,sm6xmm/wixel-xDrip,Cagier/wixel-xDrip,novagannas/wixel-xDrip,jamorham/wixel-xDrip,saercnap/wixel-DexDrip,kevinwchang/wixel-sdk,kevinwchang/wixel-sdk,attackcrow/wixel,StephenBlackWasAlreadyTaken/wixel-xDrip,Cagier/wixel-xDrip