~ruther/verilog-riscv-semestral-project

ref: 300c2dd744c0a39f8ca60ce97c3015c7af4c27cf verilog-riscv-semestral-project/src d--------- 
feat: add program counter

feat: add program memory

fix: alu arithmetical shift

Has to have signed as arguments

feat(decoder): implement memory mask, conditional jumps

refactor: parametrize register file

chore: move default case

fix: make rd1, rd2 in register_file regs

feat: add instruction decoder

chore: formatting

feat: add basic ram, alu, and register file
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