Add manual_assert

[0xLucqs]

What it does

Detects if-then-panic! that can be replaced with assert!.

Why is this bad?

assert! is simpler than if-then-panic!.

Example

let sad_people: Array<&str> = arrray![];
if !sad_people.is_empty() {
    panic!("there are sad people: {:?}", sad_people);
}

Use instead:

let sad_people: Array<&str> = array![];
assert!(sad_people.is_empty(), "there are sad people: {:?}", sad_people);

https://rust-lang.github.io/rust-clippy/master/index.html#/manual_assert

[stevencartavia]

Hi, I would like to work on this!

[onlydustapp]

Hey @stevencartavia!
Thanks for showing interest.
We've created an application for you to contribute to Cairo lint.
Go check it out on OnlyDust!

[0xLucqs]

let's go!