feat: more Complex methods

* Adds associate, conj, multiply, negate, subtract, indistinguishable
  * As a result equal is now supported
  * Adds a check for recursive loops in resolve (a key/signature method
    depending on itself

src/generic/arithmetic.js

@@ -1,6 +1,7 @@
 import {Returns} from '#core/Type.js'
 import {match, Any} from '#core/TypePatterns.js'
 
+export const conj = match(Any, (_math, T) => Returns(T, a => a))
 export const square = match(Any, (math, T) => {
    const mult = math.multiply.resolve([T, T])
    return Returns(mult.returns, a => mult(a, a))