Restore some Riot icons to ease upstream merge

and prepare the rebrand (both upstream and downstream)

vector/src/main/res/drawable-anydpi-v26/ic_launcher_foreground.xml

@@ -10,23 +10,23 @@
       android:fillType="evenOdd"/>
   <path
       android:pathData="m47.713,42.317v7.766l7.886,-0.008c0.1,0 0.192,-0.003 0.282,-0.009 2.073,-0.137 3.694,-1.837 3.694,-3.87 0,-2.139 -1.78,-3.879 -3.969,-3.879zM39.915,80.675c-4.307,0 -7.799,-3.413 -7.799,-7.623v-14.528c-0.028,-0.263 -0.043,-0.531 -0.043,-0.802 -0,-0.276 0.014,-0.549 0.043,-0.817v-22.21c0,-4.21 3.492,-7.624 7.799,-7.624h15.692c10.789,0 19.567,8.58 19.567,19.126 0,10.027 -8.012,18.408 -18.24,19.081 -0.435,0.029 -0.883,0.044 -1.327,0.044l-7.893,0.008v7.723c0,4.21 -3.491,7.623 -7.799,7.623z"
-      android:fillColor="#C5E1A5"
+      android:fillColor="#a2ddef"
       android:fillType="evenOdd"/>
   <path
       android:pathData="m47.713,42.317v7.766l7.886,-0.008c0.1,0 0.192,-0.003 0.282,-0.009 2.073,-0.137 3.694,-1.837 3.694,-3.87 0,-2.139 -1.78,-3.879 -3.969,-3.879zM39.915,80.675c-4.307,0 -7.799,-3.413 -7.799,-7.623v-38.358c0,-4.21 3.492,-7.624 7.799,-7.624h15.692c10.789,0 19.567,8.58 19.567,19.126 0,10.027 -8.012,18.408 -18.24,19.081 -0.435,0.029 -0.883,0.044 -1.327,0.044l-7.893,0.008v7.723c0,4.21 -3.491,7.623 -7.799,7.623z"
       android:strokeWidth="1.372009"
       android:fillColor="#00000000"
-      android:strokeColor="#7CB342"
+      android:strokeColor="#368bd6"
       android:fillType="evenOdd"/>
   <path
       android:pathData="m39.915,73.052v-38.358h15.692c6.499,0 11.767,5.15 11.767,11.502 0,6.089 -4.84,11.073 -10.964,11.476 -0.266,0.018 -0.533,0.027 -0.803,0.027h-15.692"
       android:strokeWidth="1.372009"
       android:fillColor="#00000000"
-      android:strokeColor="#7CB342"
+      android:strokeColor="#368bd6"
       android:fillType="evenOdd"
       android:strokeLineCap="round"/>
   <path
       android:pathData="m46.341,30.322c1.196,1.668 1.655,3.691 1.293,5.695 -0.362,2.005 -1.502,3.752 -3.21,4.92 -3.525,2.411 -8.402,1.572 -10.87,-1.871 -1.196,-1.668 -1.655,-3.691 -1.293,-5.696 0.362,-2.005 1.502,-3.752 3.21,-4.92 3.525,-2.411 8.401,-1.572 10.869,1.871zM67.439,80.671c-2.458,0 -4.876,-1.132 -6.394,-3.249l-11.022,-15.375c-2.472,-3.448 -1.616,-8.202 1.911,-10.617 3.527,-2.417 8.39,-1.58 10.862,1.868l11.022,15.375c2.472,3.448 1.616,8.202 -1.911,10.617 -1.362,0.933 -2.923,1.381 -4.469,1.381z"
-      android:fillColor="#7CB342"
+      android:fillColor="#368bd6"
       android:fillType="evenOdd"/>
 </vector>

vector/src/main/res/drawable/ic_launcher_background.xml

@@ -5,6 +5,6 @@
     android:viewportHeight="108">
   <path
       android:pathData="m0,0h108v108h-108z"
-      android:fillColor="#303030"
+      android:fillColor="#27303a"
       android:fillType="evenOdd"/>
 </vector>

vector/src/main/res/drawable/riot_animated_logo.xml

@@ -1,10 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <animation-list xmlns:android="http://schemas.android.com/apk/res/android"
     android:oneshot="false">
-    <item
-        android:drawable="@drawable/riot_splash_0_green"
-        android:duration="@integer/splash_animation_velocity" />
-        <!--
     <item
         android:drawable="@drawable/riot_splash_0_blue"
         android:duration="@integer/splash_animation_velocity" />
@@ -17,5 +13,4 @@
     <item
         android:drawable="@drawable/riot_splash_3_red"
         android:duration="@integer/splash_animation_velocity" />
-        -->
 </animation-list>

vector/src/main/res/drawable/splash.xml

@@ -5,13 +5,13 @@
     android:opacity="opaque">
 
     <!-- Background color -->
-    <item android:drawable="@color/black" />
+    <item android:drawable="@color/riot_primary_background_color_light" />
 
     <!-- Centered logo -->
     <item>
         <bitmap
             android:gravity="center"
-            android:src="@drawable/riot_splash_0_green" />
+            android:src="@drawable/riot_splash_0_blue" />
     </item>
 
 </layer-list>