Added classic 36x36 sudoku type

src/main/kotlin/io/github/ilikeyourhat/kudoku/type/Classic36x36.kt

@@ -0,0 +1,28 @@
+package io.github.ilikeyourhat.kudoku.type
+
+import io.github.ilikeyourhat.kudoku.model.SudokuType
+import io.github.ilikeyourhat.kudoku.model.dividers.RegionDivider
+
+/**
+ * WARNING: this sudoku type is very demanding for the computer resources. Generating and solving it would take
+ * a considerable amount of time, measured in minutes or even hours. For this reason, it is not recommended to use it
+ * unless you really know what you are doing.
+ *
+ * This class is not unit tested because of the above.
+ *
+ * "Your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
+ */
+object Classic36x36 : SudokuType {
+
+    override val name = "classic_36x36"
+    override val sizeX = 36
+    override val sizeY = 36
+    override val maxValue = 36
+
+    override fun divider(): RegionDivider {
+        return RegionDivider()
+            .divideByRows()
+            .divideByColumns()
+            .divideByBlocks(6)
+    }
+}

src/main/kotlin/io/github/ilikeyourhat/kudoku/type/TypesRegistry.kt

@@ -10,6 +10,7 @@ val BUILD_IN_TYPES = listOf(
     Classic12x12Vertical,
     Classic16x16,
     Classic25x25,
+    Classic36x36,
     DoubleBackslash15x15,
     DoubleDiagonal9x9,
     DoubleSlash15x15,
@@ -27,4 +28,5 @@ val CLASSIC_TYPES = listOf(
     Classic9x9,
     Classic16x16,
     Classic25x25,
+    Classic36x36
 )