Added WIP shader-phrases, annotations and tooling for shader phrases

resolving is done using the JVM class loader

orx-shader-phrases/src/main/kotlin/phrases/Dummy.kt

@@ -0,0 +1,24 @@
+@file:JvmName("Dummy")
+@file:ShaderPhrases(["dummy"])
+
+package org.openrndr.extra.shaderphrases.phrases
+import org.openrndr.extra.shaderphrases.annotations.ShaderPhrase
+import org.openrndr.extra.shaderphrases.annotations.ShaderPhrases
+
+@ShaderPhrase(["dummy"])
+const val phraseDummy = """
+float dummy() {
+    return 0.0;    
+}
+"""
+
+
+fun main() {
+    val c = Class.forName("org.openrndr.extra.shaderphrases.phrases.Dummy")
+
+    if (c.annotations.any { it.annotationClass == ShaderPhrases::class }) {
+        println(c.getDeclaredField("phraseDummy").get(null))
+
+
+    }
+}