remove shortcuts.xml plugin since shortcuts arent used anymore (#463)

updated gradle to 6.1.1
update android gradle to 4.0
add buildSrc to use kotlin for versions didnt convert them all

buildSrc/src/main/kotlin/Dependencies.kt

@@ -0,0 +1,34 @@
+object Versions {
+    const val ACRA = "4.9.2"
+    const val CHUCKER = "3.2.0"
+    const val COIL = "0.10.1"
+    const val COROUTINES = "1.3.5"
+    const val FASTADAPTER = "5.0.0"
+    const val HYPERION = "0.9.27"
+    const val NUCLEUS = "3.0.0"
+    const val OKHTTP = "4.5.0"
+    const val OSS_LICENSE = "17.0.0"
+    const val RETROFIT = "2.7.2"
+    const val ROBO_ELECTRIC = "3.1.4"
+    const val RX_BINDING ="1.0.1"
+    const val TIMBER = "4.7.1"
+    const val WORKMANAGER = "2.3.3"
+}
+
+object AndroidVersions {
+    const val BUILD_TOOL = "29.0.3"
+    const val COMPILE_SDK = 29
+    const val MIN_SDK = 23
+    const val TARGET_SDK = 29
+    const val VERSION_CODE = 66
+    const val VERSION_NAME = "1.0.7"
+}
+
+object BuildPluginsVersion {
+    const val AGP = "4.0.0"
+    const val GOOGLE_SERVICES = "4.3.3"
+    const val KOTLIN = "1.3.72"
+    const val KOTLINTER = "2.3.1"
+    const val OSS_LICENSE = "0.10.2"
+    const val VERSIONS_PLUGIN = "0.28.0"
+}