Is your feature request related to a problem? Please describe.
When passing in a slice of query params, if you have a typed integer (in my case now a proto enum), BigQuery rejects the query as invalid for an Int64 field. e.g.

type IntType int32

bigquery.QueryParam{
	Name: "int_filter",
	Value: []IntType{1, 2, 3}
}

Describe the solution you'd like
Now that generics are out and available in all supported Go versions, it should be trivial to transparently support variations with constraints.Integer. If you wanted to be extra careful, you could write your own version of the constraint to exclude uint64 to prevent truly unsupported values through.

Describe alternatives you've considered
We're manually converting slices ourselves now.

func toInt64Slice[E constraints.Integer](s []E) []int64 {
	vals := make([]int64, len(s))
	for i, v := range s {
		vals[i] = int64(v)
	}
	return vals
}