Added sample ResourceProcessor plugin

plugin/.gitignore

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+/build

plugin/build.gradle.kts

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+import com.soywiz.korge.gradle.*
+
+apply<KorgeGradlePlugin>()
+
+korge {
+	id = "com.example.example"
+}

plugin/src/commonMain/kotlin/main.kt

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+import com.soywiz.korge.*
+import com.soywiz.korge.view.*
+import com.soywiz.korio.file.std.*
+
+suspend fun main() = Korge {
+	val text1 = text("hello.demo".resource.readString())
+	val text2 = text("hello.demo.uppercased".resource.readString()).alignTopToBottomOf(text1)
+}
+
+private val String.resource get() = resourcesVfs[this]

plugin/src/commonMain/resources/hello.demo

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+world

plugin/src/jvmMain/kotlin/com/soywiz/korge/samples/plugin/MyCustomResourceProcessor.kt

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+package com.soywiz.korge.samples.plugin
+
+import com.soywiz.korge.resources.*
+import com.soywiz.korio.file.*
+
+class MyCustomResourceProcessor : ResourceProcessor("demo") {
+	override val outputExtension: String get() = "demo.uppercased"
+	override val version: Int = 1
+
+	override suspend fun processInternal(inputFile: VfsFile, outputFile: VfsFile) {
+		outputFile.writeString(inputFile.readString().toUpperCase())
+	}
+}

plugin/src/jvmMain/resources/META-INF/services/com.soywiz.korge.resources.ResourceProcessor

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+com.soywiz.korge.samples.plugin.MyCustomResourceProcessor