Cmake rework - #35
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LatencyFIFO::clock() both advances the latency counter and reopens the issue slot, so clocking twice per cycle to get two issues also halved the modeled latency. Use one pipeline per issue slot, each clocked once, matching the existing UnitSFU pattern. Throughput stays at 2 issues/cycle; latency and in-flight capacity are restored. Also widens the DRAM return path, which drained only one 32B sector per cycle and would have bottlenecked the request side. Reported by Haocong Luo (SAFARI, ETH Zurich).
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This PR aims to refactor the old cmake workflow which was functional but still confusing at times.