Reintroduce jitpack.io

Author: hannesa2

MPChartLib/build.gradle

@@ -1,5 +1,6 @@
 plugins {
     id 'com.android.library'
+    id 'maven-publish'
     id 'kotlin-android'
 }
 

build.gradle

@@ -10,6 +10,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:7.3.1'
+        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "io.github.gradle-nexus:publish-plugin:1.1.0"
     }