Theme Editor: added token maker (based on .properties token maker)

flatlaf-theme-editor/theme-editor-test.properties

@@ -0,0 +1,40 @@
+#
+# some comment
+# 
+
+ButtonUI=com.formdev.flatlaf.ui.FlatButtonUI
+  CheckBoxUI  =		com.formdev.flatlaf.ui.FlatCheckBoxUI  
+
+Prop.string=some string
+Prop.string2="some string 123 #f80"
+Prop.char1=x
+Prop.char2=\u2022
+Prop.integer=123
+Prop.float=456.123
+Prop.color1=#f80
+Prop.color2=#ff8800
+Prop.color3=#f804
+Prop.color4=#ff880044
+Prop.border=1,2,3,4
+
+Prop.scaledInteger={scaledInteger}123
+
+Prop.null=null
+Prop.false=false
+Prop.true=true
+
+@var1=123
+Prop.var=@var1
+Prop.ref=$Prop.string
+
+Prop.lazy=lazy(Prop.string)
+
+Prop.colorFunc1=rgb(12,34,56)
+Prop.colorFunc2=rgba(12,34,56,78)
+Prop.colorFunc3=hsl(12,34,56)
+Prop.colorFunc4=hsla(12,34,56,78)
+
+Prop.colorFunc5=lighten(#fe1289,20%)
+Prop.colorFunc6=darken(#fe1289,20%)
+Prop.colorFunc7=lighten($Prop.colorFunc4,20%,relative autoInverse)
+Prop.colorFunc8=lighten(Prop.colorFunc4,20%,lazy)