Reorganize tests and benchmark scripts.

Mainly to get rid of one top level directory. But this will
also be useful when there are tests of the embedding API.

test/core/bool/equality.wren

@@ -0,0 +1,23 @@
+IO.print(true == true)    // expect: true
+IO.print(true == false)   // expect: false
+IO.print(false == true)   // expect: false
+IO.print(false == false)  // expect: true
+
+// Not equal to other types.
+IO.print(true == 1)        // expect: false
+IO.print(false == 0)       // expect: false
+IO.print(true == "true")   // expect: false
+IO.print(false == "false") // expect: false
+IO.print(false == "")      // expect: false
+
+IO.print(true != true)    // expect: false
+IO.print(true != false)   // expect: true
+IO.print(false != true)   // expect: true
+IO.print(false != false)  // expect: false
+
+// Not equal to other types.
+IO.print(true != 1)        // expect: true
+IO.print(false != 0)       // expect: true
+IO.print(true != "true")   // expect: true
+IO.print(false != "false") // expect: true
+IO.print(false != "")      // expect: true

test/core/bool/not.wren

@@ -0,0 +1,3 @@
+IO.print(!true)    // expect: false
+IO.print(!false)   // expect: true
+IO.print(!!true)   // expect: true

test/core/bool/to_string.wren

@@ -0,0 +1,2 @@
+IO.print(true.toString)  // expect: true
+IO.print(false.toString) // expect: false

test/core/bool/type.wren

@@ -0,0 +1,4 @@
+IO.print(true is Bool)      // expect: true
+IO.print(true is Object)    // expect: true
+IO.print(true is Num)       // expect: false
+IO.print(true.type == Bool) // expect: true