Fixing RAM calculator and reduced actual SRAM usage

- Changed static variables to const that should have been const
- Updated CMake files to prepare for MCHCK custom bootloader
- Changed the USB ID numbers and ID number for bootloader
- Only generate DFU or Teensy binary image, not both
- Fixed RAM and FLASH calculator
- Added missing license in delay.c/h (much of it was taken from Teensy source though I've changed a bunch of it)
- Prepared mk20dx.c for upcoming bootloader addition
- mk20dx.h cleanup
- Reduced the MCHCK based flash size for the application image (bootloader changes requires more flash space)
- Fixed bugs in macro.c
- Added keyHold cli command
- Added show pending events debug message for PartialMap macro module

Scan/DPH/scan_loop.c

@@ -149,8 +149,8 @@ volatile uint8_t KeyIndex_BufferUsed;
 
 
 // Scan Module command dictionary
-char*       scanCLIDictName = "DPH Module Commands";
-CLIDictItem scanCLIDict[] = {
+const char scanCLIDictName[] = "DPH Module Commands";
+const CLIDictItem scanCLIDict[] = {
 	{ "echo",        "Example command, echos the arguments.", cliFunc_echo },
 	{ "avgDebug",    "Enables/Disables averaging results." NL "\t\tDisplays each average, starting from Key 0x00, ignoring 0 valued averages.", cliFunc_avgDebug },
 	{ "keyDebug",    "Enables/Disables long debug for each keypress." NL "\t\tkeycode - [strobe:mux] : sense val : threshold+delta=total : margin", cliFunc_keyDebug },