use recyclerview for episodes in media fragment

closes #3

app/src/main/java/org/mosad/teapod/util/DataTypes.kt

@@ -8,6 +8,7 @@ class DataTypes {
     }
 }
 
+// TODO rework: add type, episodes list with episode title, if type == MOVIE the first episode will be the movie stream
 data class GUIMedia(val title: String, val posterLink: String, val shortDesc : String, val link: String) {
     override fun toString(): String {
         return title

app/src/main/java/org/mosad/teapod/util/EpisodesAdapter.kt

@@ -0,0 +1,35 @@
+package org.mosad.teapod.util
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import kotlinx.android.synthetic.main.component_episode.view.*
+import org.mosad.teapod.R
+
+class EpisodesAdapter(private val data: List<String>) : RecyclerView.Adapter<EpisodesAdapter.MyViewHolder>() {
+
+    var onItemClick: ((String, Int) -> Unit)? = null
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
+        val view = LayoutInflater.from(parent.context).inflate(R.layout.component_episode, parent, false)
+
+        return MyViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
+        holder.view .text_episode_title.text = data[position]
+    }
+
+    override fun getItemCount(): Int {
+        return data.size
+    }
+
+    inner class MyViewHolder(val view: View) : RecyclerView.ViewHolder(view) {
+        init {
+            view.setOnClickListener {
+                onItemClick?.invoke(data[adapterPosition], adapterPosition)
+            }
+        }
+    }
+}