Add bool::then_some function

[0xLucqs]

Converts a bool in an option

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This change is 

[orizi]

Reviewable status: 0 of 12 files reviewed, 1 unresolved discussion (waiting on @LucasLvy)

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corelib/src/lib.cairo line 18 at r6 (raw file):

}

impl BoolSerde of Serde<bool> {

Don't move now any of the existing impls, just create the new one in the new file.

[0xLucqs]

should be good now

[orizi]

Reviewable status: 0 of 12 files reviewed, 3 unresolved discussions (waiting on @LucasLvy)

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corelib/src/boolean.cairo line 2 at r8 (raw file):

#[generate_trait]
pub impl ThenSome<T, +Drop<T>> of ThenSomeTrait<T> {

no reason the next added functions won't be added here.

Suggestion:

pub impl BoolImpl<T, +Drop<T>> of BoolTrait<T> {

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corelib/src/lib.cairo line 101 at r8 (raw file):

}
pub mod boolean;
use boolean::ThenSome;

remove.

Code quote:

use boolean::ThenSome;

[orizi]

Reviewed 10 of 12 files at r7, 2 of 2 files at r9, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @LucasLvy)

[orizi]

Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @LucasLvy)

[orizi]

Reviewed 10 of 11 files at r10, all commit messages.
Reviewable status: 11 of 12 files reviewed, all discussions resolved (waiting on @ilyalesokhin-starkware)

[ilyalesokhin-starkware]

Reviewed 1 of 2 files at r9, 11 of 11 files at r10.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @LucasLvy)