add print with newline and terminal init by sending nl

Internal refactoring, newline fixs, added clear rx buf

const correcting

Signed-off-by: akudlacek <[email protected]>

increase default CLI_MAX_LEN_BUFF to 256

Signed-off-by: akudlacek <[email protected]>

Made the rest of the #defines redefinable without having to modify fi…

…rmware.

You will have to use preprocessor global symbols of some sort

Signed-off-by: akudlacek <[email protected]>

V2.0.1 Fixed a few issues

-Works with ARM/GNU99
-Echo enabled by default
-Missing some local variable init
-backspace echoed only if deleting from local buffer
-have to use memset to clean buffer, otherwise garbage will get interperted as arguments
-added some more datatypes
-the command list uses macros around the function pointers

Signed-off-by: akudlacek <[email protected]>

fixed help command formatting

Signed-off-by: akudlacek <[email protected]>