[orx-text-writer] Add horizontal and vertical text alignment features

Introduced horizontalAlign and verticalAlign properties in WriteStyle and TextWriter, enabling precise text alignment within bounding boxes. Enhanced text token management to support alignment calculations and adjusted demos to showcase the new capabilities.

orx-text-writer/src/jvmDemo/kotlin/DemoTextWriter01.kt

@@ -1,9 +1,11 @@
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.TextSettingMode
 import org.openrndr.draw.isolated
 import org.openrndr.draw.loadFont
 import org.openrndr.extra.textwriter.writer
 import org.openrndr.shape.Rectangle
+import kotlin.math.cos
 
 /**
  * This demo features the drawing of a centered rectangle and the addition of styled text inside
@@ -24,9 +26,7 @@ import org.openrndr.shape.Rectangle
  * - `writer` facilitates text rendering with alignment and spacing adjustments.
  */
 fun main() {
-
     application {
-
         program {
             extend {
                 val r = Rectangle.fromCenter(drawer.bounds.center, 200.0, 200.0)
@@ -37,9 +37,15 @@ fun main() {
                 }
                 drawer.fontMap = loadFont("demo-data/fonts/IBMPlexMono-Regular.ttf", 24.0)
                 writer {
+                    drawer.drawStyle.textSetting = TextSettingMode.SUBPIXEL
+                    style.horizontalAlign = cos(seconds) * 0.5 + 0.5
                     box = r.offsetEdges(-10.0)
                     newLine()
                     text("hello world")
+                    newLine()
+                    text("this is a test")
+                    newLine()
+                    text("centered")
                 }
             }
         }