Feature flag for opt-in/opt-out of checked launches

[torsteingrindvik]

Add a feature flag to either opt-in to checked kernel launches, or a feature flag to opt-in to unchecked kernel launches.
Whichever makes most sense for the end user.

[torsteingrindvik]

Some context from discord: https://discordapp.com/channels/1038839012602941528/1091796857996451942/1307410785190019163

@nathanielsimard :

Also, we could have a feature flag on CubeCL disabling unchecked no matter what

Could you elaborate a bit on what you'd like to have?

Do you mean a feature flag e.g.

#[features]
checked-launches = []

which if turned on adds checking?

And if so I take it there should only exist #[cube(launch)] and the feature flag decides the check behaviour.

If I know what's desired I might contribute a PR for it

[nathanielsimard]

I would say more like:

force-checked = []

And in the client, always pass ExecutionMode::Checked even when calling unchecked.