explicit converts bool types to int types for quoted variables

[ringabout]

Here is the definition of parReq, which is an int type

parReq*: int        ## flag indicating parameter is mandatory

Here is the definition of isReq, which is a boolean type

let isReq = if i in mandatory: true else: false

In the quote block, isReq is assigned to the parReq field, which has incompatible types.

`apId`.parReq = `isReq`

It is not safe to rely on the type erasure at the compile time, which might be changed in the future => nim-lang/Nim#21433

[c-blake]

Thank you!!