[prim] Remove primgen and replace with virtual cores #3582

Job	Run time
Lint (quick)	3m 28s
Airgapped build	11m 39s
Lint (slow)	11m 32s
Verible lint	1m 2s
Run OTBN smoke Test	2m 18s
Build documentation	5m 3s
Build Docker Containers	2m 30s
CW305's Bitstream	20m 34s
Build and test software	15m 1s
Run OTBN crypto tests	21m 12s
Verilated Earl Grey	1h 20m 43s
Verilated English Breakfast	7m 56s
Earl Grey for CW310 / Build bitstream	1h 4m 4s
Earl Grey for CW340 / Build bitstream	1h 32m 36s
Earl Grey for CW310 Hyperdebug / Build bitstream	1h 2m 37s
CW310 SiVal ROM_EXT Tests / FPGA test	36m 19s
CW310 SiVal Tests / FPGA test	24m 7s
CW310 Manufacturing Tests / FPGA test	31m 36s
CW310 ROM_EXT Tests / FPGA test	5m 22s
CW310 Test ROM Tests / FPGA test	3m 31s
CW310 ROM Tests / FPGA test	36m 51s
Cache bitstreams to GCP	0s
CW340 Test ROM Tests / FPGA test	3m 53s
CW340 ROM_EXT Tests / FPGA test	6m 47s
CW340 ROM Tests / FPGA test	1m 4s
CW340 Manufacturing Tests / FPGA test	8m 36s
CW340 SiVal Tests / FPGA test	17m 48s
CW340 SiVal ROM_EXT Tests / FPGA test	4m 0s
Verify FPGA jobs	21s
	9h 42m 30s

Provide feedback