feat: Template types (#45)

Includes a full implementation of a type-homogeneous Tuple type, using the template types
  feature, as a demonstration/check of its operation.

Co-authored-by: Glen Whitney <glen@studioinfinity.org>
Reviewed-on: #45

src/bigint/native.mjs

@@ -1,9 +1,11 @@
 import gcdType from '../generic/gcdType.mjs'
+import {identity} from '../generic/identity.mjs'
 
 export * from './Types/bigint.mjs'
 
 export {add} from './add.mjs'
 export {compare} from './compare.mjs'
+export const conjugate = {bigint: () => identity}
 export {divide} from './divide.mjs'
 export const gcd = gcdType('bigint')
 export {isZero} from './isZero.mjs'