* Closes#2827
* Adds an optimization phase to the JuvixReg -> Casm pipeline, which
consists of repeated copy & constant propagation and dead code
elimination.
* Closes#2563
Checklist
------------
- [x] Serialization of the Haskell CASM representation to the JSON
format accepted by the Cairo VM.
- [x] Add the `cairo` target to the `compile` commands.
- [x] Output via the Cairo `output` builtin.
- [x] Relativize jumps. Cairo VM doesn't actually support absolute
jumps.
- [x] Test the translation from CASM to Cairo by running the output in
the Cairo VM
- [x] Add Cairo VM to the CI
The following benchmark compares juvix 0.6.0 with polysemy and a new
version (implemented in this pr) which replaces polysemy by effectful.
# Typecheck standard library without caching
```
hyperfine --warmup 2 --prepare 'juvix-polysemy clean' 'juvix-polysemy typecheck Stdlib/Prelude.juvix' 'juvix-effectful typecheck Stdlib/Prelude.juvix'
Benchmark 1: juvix-polysemy typecheck Stdlib/Prelude.juvix
Time (mean ± σ): 3.924 s ± 0.143 s [User: 3.787 s, System: 0.084 s]
Range (min … max): 3.649 s … 4.142 s 10 runs
Benchmark 2: juvix-effectful typecheck Stdlib/Prelude.juvix
Time (mean ± σ): 2.558 s ± 0.074 s [User: 2.430 s, System: 0.084 s]
Range (min … max): 2.403 s … 2.646 s 10 runs
Summary
juvix-effectful typecheck Stdlib/Prelude.juvix ran
1.53 ± 0.07 times faster than juvix-polysemy typecheck Stdlib/Prelude.juvix
```
# Typecheck standard library with caching
```
hyperfine --warmup 1 'juvix-effectful typecheck Stdlib/Prelude.juvix' 'juvix-polysemy typecheck Stdlib/Prelude.juvix' --min-runs 20
Benchmark 1: juvix-effectful typecheck Stdlib/Prelude.juvix
Time (mean ± σ): 1.194 s ± 0.068 s [User: 0.979 s, System: 0.211 s]
Range (min … max): 1.113 s … 1.307 s 20 runs
Benchmark 2: juvix-polysemy typecheck Stdlib/Prelude.juvix
Time (mean ± σ): 1.237 s ± 0.083 s [User: 0.997 s, System: 0.231 s]
Range (min … max): 1.061 s … 1.476 s 20 runs
Summary
juvix-effectful typecheck Stdlib/Prelude.juvix ran
1.04 ± 0.09 times faster than juvix-polysemy typecheck Stdlib/Prelude.juvix
```
Now the prelude exports this function:
```
readFile :: (MonadIO m) => Path Abs File -> m Text
readFile = liftIO . Utf8.readFile . toFilePath
```
It is more convenient to use because it uses typed `Path` and works in
any `MonadIO`.
* Implements JuvixReg recursors, which will allow to implement JuvixReg
transformations more succinctly and effectively.
* Adds a transformation framework to JuvixReg.
* Adds identity transformation tests.
* Depends on #2635
