Add String and String Literals

[mariari]

We should support string and string literals

Strategies

Using Arrays

One way to compile strings is to have a byte array of ascii values, where each character is represented by their numerical value (E.G. #\D = 100).

packing by byte concatenation

Another interesting technique, if the array is inefficinet. Is to pack the string bitwise. E.G:

"df"
;; this is really
'(100 102)

;; We can now pack this into one elemnt by bit shifting the 100
;; and adding the 102 to the bitshifted value, concatenating them!
(cl:+ (ash 100 7) 102)
#b110010 01100110

However it needs to be noted that we should know the field size, and make sure we don't overflow this when shifting. Thus we should have a small array of these values if we do go over size