[Optimizer][D2M] Support `D2M_SubgraphOp` with Optimizer enabled and fall-back to DRAM

Should be able to run sth like:
```
ttmlir-opt ... --ttnn-d2m-fusing --ttnn-optimizer="
memory-layout-analysis-enabled=true memreconfig-enabled=true memory-layout-analysis-policy=DFSharding"
```