self keyword to const

[piotmag769]

No description provided.

[reviewable-StarkWare]

This change is 

[Draggu]

Reviewed 7 of 7 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @gilbens-starkware and @orizi)

[piotmag769]

@orizi I cannot seem to push a fix for rustfmt for some reason:

remote: error: GH006: Protected branch update failed for refs/heads/self-const.
remote: 
remote: - Required status check "code-review/reviewable" is expected.
remote: 
remote: - Cannot force-push to this branch
To github.com:starkware-libs/cairo.git
 ! [remote rejected]     self-const -> self-const (protected branch hook declined)
error: failed to push some refs to 'github.com:starkware-libs/cairo.git'

[orizi]

Your work branches should have separating /.
This was caught by the catch all branch protector rules

[piotmag769]

Closing in favour of #7420