refactor: Herstructurering

src/prolog/ast/logic/Provable.kt

@@ -0,0 +1,13 @@
+package prolog.ast.logic
+
+import prolog.logic.Substituted
+
+interface Provable {
+    /**
+     * Proves the current [Provable] instance.
+     *
+     * @return a sequence of [Substituted] instances representing the results of the proof.
+     * If the proof fails, an empty sequence is returned.
+     */
+    fun prove(subs: Substituted): Sequence<Substituted>
+}