dev: replace `unwrap` with `expect`

[greged93]

Replace all occurrences of unwrap with expect, making it a lot easier to debug during integration testing. Having unwrap in the codebase causes the VM to crash with Result::unwrap failed., whereas expect returns the error message passed to expect.

[TAdev0]

hey @greged93 may i try to work on this one? Should i find by myself which felt252 error message to give as input to expect function? thank you.

[enitrat]

@TAdev0 Could you wait a bit until we scope this issue with more precision? For now we didn't identify which parts could really benefit from this.

[TAdev0]

Sure, thank you!

[TAdev0]

@greged93 @enitrat is better debugging with expect during integration tests still needed? if yes did you scope which parts need better debugging experience?

[enitrat]

for now SSJ is not on the priority list, so not a lot of stuff going on here