feat: rename IO.write to IO.print and add Unicode escape support in strings

Rename the IO.write method to IO.print, which now prints without a trailing newline, and add a new IO.print method that appends a newline after output. Update all benchmark, example, and test files to use IO.print instead of IO.write. Additionally, implement Unicode escape sequence parsing in the compiler's string tokenizer, supporting \uXXXX and \u{...} syntax with proper UTF-8 encoding for code points up to U+10FFFF.

test/closure/assign_to_closure.wren

@@ -4,15 +4,15 @@ var g = null
 {
   var local = "local"
   f = fn {
-    IO.write(local)
+    IO.print(local)
     local = "after f"
-    IO.write(local)
+    IO.print(local)
   }
 
   g = fn {
-    IO.write(local)
+    IO.print(local)
     local = "after g"
-    IO.write(local)
+    IO.print(local)
   }
 }
 

test/closure/close_over_function_parameter.wren

@@ -2,7 +2,7 @@ var f = null
 
 fn(param) {
   f = fn {
-    IO.write(param)
+    IO.print(param)
   }
 }.call("param")
 

test/closure/close_over_method_parameter.wren

@@ -3,7 +3,7 @@ var f = null
 class Foo {
   method(param) {
     f = fn {
-      IO.write(param)
+      IO.print(param)
     }
   }
 }

test/closure/closed_closure_in_function.wren

@@ -3,7 +3,7 @@ var f = null
 {
   var local = "local"
   f = fn {
-    IO.write(local)
+    IO.print(local)
   }
 }
 

test/closure/closed_closure_in_method.wren

@@ -4,7 +4,7 @@ var foo = null
   var local = "local"
   class Foo {
     method {
-      IO.write(local)
+      IO.print(local)
     }
   }
 

test/closure/nested_closure.wren

@@ -7,9 +7,9 @@ fn {
     fn {
       var c = "c"
       f = fn {
-        IO.write(a)
-        IO.write(b)
-        IO.write(c)
+        IO.print(a)
+        IO.print(b)
+        IO.print(c)
       }
     }.call
   }.call

test/closure/open_closure_in_function.wren

@@ -1,6 +1,6 @@
 {
   var local = "local"
   fn {
-    IO.write(local) // expect: local
+    IO.print(local) // expect: local
   }.call
 }

test/closure/open_closure_in_method.wren

@@ -2,7 +2,7 @@
   var local = "local"
   class Foo {
     method {
-      IO.write(local)
+      IO.print(local)
     }
   }
 

test/closure/reference_closure_multiple_times.wren

@@ -3,8 +3,8 @@ var f = null
 {
   var a = "a"
   f = fn {
-    IO.write(a)
-    IO.write(a)
+    IO.print(a)
+    IO.print(a)
   }
 }
 

test/closure/reuse_closure_slot.wren

@@ -3,7 +3,7 @@
 
   {
     var a = "a"
-    f = fn IO.write(a)
+    f = fn IO.print(a)
   }
 
   {

test/closure/use_global_in_function.wren

@@ -2,5 +2,5 @@ var global = "global"
 // TODO: Forward reference to global declared after use.
 
 fn {
-  IO.write(global) // expect: global
+  IO.print(global) // expect: global
 }.call

test/closure/use_global_in_method.wren

@@ -3,11 +3,11 @@ var global = "global"
 
 class Foo {
   method {
-    IO.write(global)
+    IO.print(global)
   }
 
   static classMethod {
-    IO.write(global)
+    IO.print(global)
   }
 }