Added the class InputProfilePhoto, describing a profile photo to be set.

Author: mircoianese

library/src/main/java/com/pengrad/telegrambot/model/inputprofilephoto/InputProfilePhoto.kt

@@ -0,0 +1,3 @@
+package com.pengrad.telegrambot.model.inputprofilephoto
+
+open class InputProfilePhoto(val type: String)

library/src/main/java/com/pengrad/telegrambot/model/inputprofilephoto/InputProfilePhotoAnimated.kt

@@ -0,0 +1,17 @@
+package com.pengrad.telegrambot.model.inputprofilephoto
+
+@Suppress("unused")
+class InputProfilePhotoAnimated private constructor(
+    val animation: String,
+    var mainFrameTimestamp: Double?
+) : InputProfilePhoto(type = "animated") {
+
+    constructor(animation: String) : this(
+        animation = animation,
+        mainFrameTimestamp = null
+    )
+
+    fun mainFrameTimestamp(mainFrameTimestamp: Double) = apply {
+        this.mainFrameTimestamp = mainFrameTimestamp
+    }
+}

library/src/main/java/com/pengrad/telegrambot/model/inputprofilephoto/InputProfilePhotoStatic.kt

@@ -0,0 +1,4 @@
+package com.pengrad.telegrambot.model.inputprofilephoto
+
+@Suppress("unused")
+class InputProfilePhotoStatic(val photo: String) : InputProfilePhoto(type = "static")