feat: add phone session list + event log empty-shell screens

app/src/main/res/layout/activity_event_log.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="16dp"
+    android:background="@color/deep_blue">
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="事件流（空壳）"
+        android:textColor="@color/white"
+        android:textSize="20sp"
+        android:textStyle="bold" />
+    <ListView
+        android:id="@+id/event_list"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginTop="12dp"
+        android:divider="@color/light_blue"
+        android:dividerHeight="1dp" />
+</LinearLayout>

app/src/main/res/layout/activity_main.xml

@@ -38,6 +38,20 @@
         android:layout_marginTop="12dp"
         android:text="@string/btn_settings" />
 
+    <Button
+        android:id="@+id/btn_sessions"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="12dp"
+        android:text="@string/btn_sessions" />
+
+    <Button
+        android:id="@+id/btn_events"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="12dp"
+        android:text="@string/btn_events" />
+
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"

app/src/main/res/layout/activity_session_list.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="16dp"
+    android:background="@color/deep_blue">
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="会话列表（空壳）"
+        android:textColor="@color/white"
+        android:textSize="20sp"
+        android:textStyle="bold" />
+    <ListView
+        android:id="@+id/session_list"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginTop="12dp"
+        android:divider="@color/light_blue"
+        android:dividerHeight="1dp" />
+</LinearLayout>

app/src/main/res/values/strings.xml

@@ -4,6 +4,8 @@
     <string name="status_disconnected">未连接（空壳）</string>
     <string name="btn_refresh">刷新状态</string>
     <string name="btn_settings">设置</string>
+    <string name="btn_sessions">会话列表</string>
+    <string name="btn_events">事件流</string>
     <string name="settings_title">设置</string>
     <string name="label_server">服务器地址</string>
     <string name="hint_server">ws://host:port</string>