[SAOC 25] improve importC weekly update 16

[Emmanuel]

Hi all,

this week I started researching into implementing float16 
properly for importC.
I have been able to introduce it and handled lexing and parsing. 
currently assessing how it can easily and simply fit into it.

additionally, I am also trying to fix static declaration backend 
issue we face when we compile with `-lib` option. when the 
function is declared and the function is implemented after the 
unction call, the replacement semantics doesn't handle it well. I 
tried with a few tries and hitting segfault. still looking into 
it to get it fixed. hopeful we can generate static libraries with 
forward declarations of C functions.