Add oauth2 client

lib/build.gradle

@@ -0,0 +1,26 @@
+plugins {
+    id "java-library"
+}
+
+version = "0.0.4"
+archivesBaseName = "tribufu"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    api "org.apache.commons:commons-math3:3.6.1"
+    implementation "com.google.guava:guava:31.1-jre"
+    testImplementation "org.junit.jupiter:junit-jupiter:5.9.1"
+}
+
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(11)
+    }
+}
+
+tasks.named("test") {
+    useJUnitPlatform()
+}