Updated Magisk fragment to Kotlin

Exported old update card to special xml include where binding takes care of everything that had to be done in code beforehand.
Added several easing functions and enums.
Backported some classes and functions from the old fork

Expect major breakage. Literally nothing works as the functionality needs to be implemented

app/src/main/java/com/topjohnwu/magisk/model/events/ViewEvents.kt

@@ -0,0 +1,14 @@
+package com.topjohnwu.magisk.model.events
+
+import com.skoumal.teanity.viewevents.ViewEvent
+
+
+data class OpenLinkEvent(val url: String) : ViewEvent()
+
+object ManagerInstallEvent : ViewEvent()
+object MagiskInstallEvent : ViewEvent()
+
+object ManagerChangelogEvent : ViewEvent()
+object MagiskChangelogEvent : ViewEvent()
+
+object UninstallEvent : ViewEvent()

app/src/main/java/com/topjohnwu/magisk/model/observer/Observer.kt

@@ -0,0 +1,31 @@
+package com.topjohnwu.magisk.model.observer
+
+import androidx.databinding.Observable
+import androidx.databinding.ObservableField
+import java.io.Serializable
+
+
+class Observer<T>(vararg dependencies: Observable, private val observer: () -> T) :
+    ObservableField<T>(*dependencies), Serializable {
+
+    val value: T get() = observer()
+
+    @Deprecated(
+        message = "Use KObservableField.value syntax from code",
+        replaceWith = ReplaceWith("value")
+    )
+    override fun get(): T {
+        return value
+    }
+
+    @Deprecated(
+        message = "Observer cannot be set",
+        level = DeprecationLevel.HIDDEN
+    )
+    override fun set(newValue: T) {
+    }
+
+    override fun toString(): String {
+        return "Observer(value=$value)"
+    }
+}