refactor: reorganize packages

Author: kelvin-olaiya

src/main/scala/io/github/kelvindev15/prolog/core/Constant.scala

@@ -1,7 +1,7 @@
 package io.github.kelvindev15.prolog.core
 
 import io.github.kelvindev15.prolog.core.Struct.quoteIfFunctorIsMalformed
-import io.github.kelvindev15.prolog.utils.TermVisitor
+import io.github.kelvindev15.prolog.visitors.TermVisitor
 
 /** A Prolog Constant, either numeric or an atom */
 trait Constant extends Term:

src/main/scala/io/github/kelvindev15/prolog/core/Goals.scala

@@ -3,7 +3,7 @@ package io.github.kelvindev15.prolog.core
 import io.github.kelvindev15.prolog.core.Constant.Atom
 import io.github.kelvindev15.prolog.core.Prolog.Functors
 import io.github.kelvindev15.prolog.core.RecursiveStruct.BinaryRecursiveStruct
-import io.github.kelvindev15.prolog.utils.TermVisitor
+import io.github.kelvindev15.prolog.visitors.TermVisitor
 
 object Goals:
   /** Represents a conjunction of goals. */

src/main/scala/io/github/kelvindev15/prolog/core/RecursiveStruct.scala

@@ -1,6 +1,6 @@
 package io.github.kelvindev15.prolog.core
 
-import io.github.kelvindev15.prolog.utils.BinaryToFlatVisitor
+import io.github.kelvindev15.prolog.visitors.BinaryToFlatVisitor
 
 /** A Prolog [[Struct]] that is also recursive. */
 trait RecursiveStruct extends Struct:

src/main/scala/io/github/kelvindev15/prolog/core/Struct.scala

@@ -4,7 +4,7 @@ import io.github.kelvindev15.prolog.core.Constant.Atom
 import io.github.kelvindev15.prolog.core.Goals.Conjunction
 import io.github.kelvindev15.prolog.core.Prolog.Functors.CLAUSE
 import io.github.kelvindev15.prolog.core.Prolog.{Functors, Syntax}
-import io.github.kelvindev15.prolog.utils.TermVisitor
+import io.github.kelvindev15.prolog.visitors.TermVisitor
 
 /** A Prolog compound term */
 trait Struct extends Term:

src/main/scala/io/github/kelvindev15/prolog/core/Term.scala

@@ -1,10 +1,7 @@
 package io.github.kelvindev15.prolog.core
 
-import io.github.kelvindev15.prolog.utils.{
-  TermConvertible,
-  TermVisitor,
-  ToStringTermVisitor
-}
+import io.github.kelvindev15.prolog.utils.TermConvertible
+import io.github.kelvindev15.prolog.visitors.{TermVisitor, ToStringTermVisitor}
 
 /** A trait to visit a Term like object. */
 trait Visitable:

src/main/scala/io/github/kelvindev15/prolog/core/Variable.scala

@@ -1,7 +1,7 @@
 package io.github.kelvindev15.prolog.core
 
 import io.github.kelvindev15.prolog.core.Prolog.Syntax.VariableRegex
-import io.github.kelvindev15.prolog.utils.TermVisitor
+import io.github.kelvindev15.prolog.visitors.TermVisitor
 
 /** A Prolog variable */
 trait Variable extends Term:

src/main/scala/io/github/kelvindev15/prolog/solver/tuprolog/visitors/To2PKtTermVisitor.scala

@@ -6,7 +6,7 @@ import io.github.kelvindev15.prolog.core.PrologList.Cons
 import io.github.kelvindev15.prolog.core.RecursiveStruct.BinaryRecursiveStruct
 import io.github.kelvindev15.prolog.core.Struct.{Clause, Directive, Fact, Rule}
 import io.github.kelvindev15.prolog.solver.tuprolog.TuPrologFactoryMethods.*
-import io.github.kelvindev15.prolog.utils.TermVisitor
+import io.github.kelvindev15.prolog.visitors.TermVisitor
 import it.unibo.tuprolog.core.{Scope as KScope, Term as KTerm}
 
 /** Converts a tuProlog [[Term]] hierarchy to a [[Term]] hierarchy. Creates a

src/main/scala/io/github/kelvindev15/prolog/visitors/BinaryToFlatVisitor.scala

@@ -1,4 +1,4 @@
-package io.github.kelvindev15.prolog.utils
+package io.github.kelvindev15.prolog.visitors
 
 import io.github.kelvindev15.prolog.core.RecursiveStruct.BinaryRecursiveStruct
 import io.github.kelvindev15.prolog.core.RecursiveStruct.BinaryRecursiveStruct.Tuple

src/main/scala/io/github/kelvindev15/prolog/visitors/ToStringTermVisitor.scala

@@ -1,14 +1,9 @@
-package io.github.kelvindev15.prolog.utils
+package io.github.kelvindev15.prolog.visitors
+
 import io.github.kelvindev15.prolog.core.Goals.{Conjunction, Disjunction}
 import io.github.kelvindev15.prolog.core.RecursiveStruct.BinaryRecursiveStruct
 import io.github.kelvindev15.prolog.core.Struct.Clause
-import io.github.kelvindev15.prolog.core.{
-  Constant,
-  PrologList,
-  RecursiveStruct,
-  Struct,
-  Variable
-}
+import io.github.kelvindev15.prolog.core.*
 
 class ToStringTermVisitor extends TermVisitor[String]:
 

src/test/scala/io/github/kelvindev15/prolog/core/TestRules.scala

@@ -2,7 +2,7 @@ package io.github.kelvindev15.prolog.core
 
 import io.github.kelvindev15.prolog.core.Constant.Atom
 import io.github.kelvindev15.prolog.core.Struct.Rule
-import io.github.kelvindev15.prolog.utils.BinaryToFlatVisitor
+import io.github.kelvindev15.prolog.visitors.BinaryToFlatVisitor
 import org.scalatest.flatspec.AnyFlatSpec
 import org.scalatest.matchers.should.Matchers