initial version of compiler and parser gradle module

compiler/build.gradle

@@ -0,0 +1,21 @@
+plugins {
+    id "org.jetbrains.kotlin.jvm" version "1.3.20"
+}
+
+repositories {
+    mavenCentral()
+    jcenter()
+}
+
+def kotlinVersion = '1.3.20'
+
+dependencies {
+    implementation project(':parser')
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlinVersion"
+    runtime "org.jetbrains.kotlin:kotlin-reflect:$kotlinVersion"
+
+	testImplementation "org.jetbrains.kotlin:kotlin-test-junit5:$kotlinVersion"
+    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.3.2'
+    testImplementation 'org.hamcrest:hamcrest-junit:2.0.0.0'
+}
+

parser/build.gradle

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+plugins {
+    id 'antlr'
+    id 'java'
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    antlr 'org.antlr:antlr4:4.7.2'
+}
+
+compileJava {
+    dependsOn tasks.withType(AntlrTask)
+}
+
+generateGrammarSource {
+    outputDirectory = file("src/prog8/parser")
+    arguments += ["-no-listener","-no-visitor"]
+}

settings.gradle

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+include ':parser'
+include ':compiler'