chore: move inital sp to 1020

feat: add support for loading and saving ram from disk

feat: pass program to execute by parameter

feat: store c results in memory addr 0

feat: implement ebreak

Breaks the processor, can
exit the testcase

chore: trace memory array

feat: make RAM word aligned, add byte_enable

Support sb, sh, lb, lh using byte enable
instead of non-word aligned reads and writes.

test: add cpu testbenches for c programs

feat: add gcd program for testing

fix: jump according to zero flag, not LSB zero!!

feat: add branches.c test

test: add ram test

chore: add generated bin, obj gitignore files

fix(Makefile): make objdump and all testbenches work

chore: add risc toolchain to flake

chore: remove gcc generated file

fix: offset ram by bytes, not bits

feat: add basic testing programs

chore: add makefile for both verilog and c

feat: implement sb, sh, lb, lh support via masking