Extract SMNP core from 'app' module to 'core' module

app/build.gradle

@@ -1,10 +1,5 @@
 dependencies {
-    compile project(':api')
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
-    compile group: 'org.jetbrains.kotlin', name: 'kotlin-reflect', version: '1.3.61'
-    compile group: 'org.pf4j', name: 'pf4j', version: '3.2.0'
-    compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.13.1'
-    compile group: 'org.slf4j', name: 'slf4j-log4j12', version: '2.0.0-alpha1'
+    compile project(':core')
     compile "com.xenomachina:kotlin-argparser:2.0.7"
 }