Refactor passes/compiler and add a lot of features

[Paul1365972]

I extracted all the non destructive changes from my feature branches into one "nice" PR. A lot of the changes are useful by themself. However this is mostly so I don't go insane rebasing stuff every few weeks, as my branches have diverged too far from the main branch by now.

Changelog:

• Added the remaining sign types
• Allow signs to be picked/placed with NBT data
• Add tab-complete to commonly used commands that were currently missing it
• Move specific immutable properties from Node to NodeType for Compiler and Backend
  • Moved facing_diode to Repeater and Comparator only
  • Moved far_input to Comparator variant
• Improved the Compilers and Backends understanding of what is considered "relevant"
  • Compiler passes now don't optimize away nodes that are considered inputs or outputs
  • Backend now gets information from the Compiler which blocks it should consider io, important for flushing in io_only mode
  • Removed SimpleRepeater as it actually slightly decreases performance after Bram's patch
  • Prepared for addition of new Backends by implementing Backend switching
  • Added a compiler pass that combines the 15 repeaters of "analog repeaters" into one comparator
  • Added a compiler pass that removes all nodes not transitively connected to an output node (only runs when io_only and optimization is enabled)
  • Modified constant_coalesce pass so that it won't coalesce constants that belong to different unconncted builds (This is one of the few changes that improve nothing for now and is mostly so that my threading doesn't break)
  • Added an annotation system using signs, implemented as a second pass in the identify nodes compiler pass for optimization reasons (Currently there are no annotations implemented, but in the future it will be useful to, for example, automatically print the state of redstone components etc.)
  • A lot of other minor stuff

[Paul1365972]

I took some time to separate most of the changes, the "Overhaul redpiler compilation" (7a20fc4) commit is still huge, but it was too difficult to disentangle all of those changes

[Paul1365972]

Yeah I thought about the case where the analog repeater output is not a comparator as well, I believe it shouldn't matter, but I think I'll add it anyways, just in case. Any ideas to make the analog_repeaters pass more readable and easier to understand? I'm not really happy with how complicated it is.