[Feature Request] Add layout spec and distillation times to LLI

[gwwatkin]

Issue Description

Background

• 250 defined a layout specification, now in use by https://github.com/latticesurgery-com/liblsqecc.

• Though the above spec allows defining distillation regions, the time is always hard coded to 10 timesteps, we want to be able to specify them manually.

• 246 introduced Logical Lattice Instructions (LLI) (AKA Lattice Surgery Instructions (LSI))

• Pre-processing can automatically generate LLI. We will want in the future to also be able to automatically generate layouts
• Since the layout is likeley

The Slicer https://github.com/latticesurgery-com/liblsqecc reads a layout spec and LLI from two separate files

Proposed Solution

Add an LLI instruction that looks like this Something like this

DeclareLogicalQubitPatches 0,1,2,3,4,5,6,7,8,9
Layout 8x9
rrrrr111
QrQQr111
QrQQr111
rrrrr222
QrQQr222
QrQAr222
rrrrr333
44444333
44444333
DistillationTime 10,10,10,8
... More LLI

Where the distillation times are assigned to the distillation regions encountered in row major order