Changing the name of a FuTIL component

Currently, we can use -n <name> to change the name of a kernel from kernel to <name> at the Dahlia level. However, when lowered to FuTIL, the component remains as main.

For example: Running this from my Dahlia repository:
./fuse ./../futil/examples/dahlia/vectorized-add.fuse -n NewName -b futil --lower
will change the name of the kernel when lowered to Vivado, but in FuTIL it remains unchanged.

Good point! To make the implicit explicit, this is important for doing calyxir/calyx#186, which needs to emit & merge non-main components.

Here is where the name is hard-coded, FWIW:

dahlia/src/main/scala/backends/futil/FutilBackend.scala

Line 654 in 6a92be7

Component("main", List(), List(), struct.sorted, control)

and I think it could instead get the name from config?