ivm: add f32_sqrt extrinsic function

[nilscrm]

Since almost all modern hardware support sqrt on floats, I think it makes sense to add it as a native extrinsic function.

[tjjfvi]

Since almost all modern hardware support log on floats, I think it makes sense to add it as a native extrinsic function.

Did you mean to say sqrt here?

[nilscrm]

Did you mean to say sqrt here?

ah yes

[nilscrm]

Close in favor of #339