Rename bitcoin to palladium in android components

Update package names, intent filters and references from org.electrum to org.palladium

contrib/android/buildozer_qml.spec

@@ -197,7 +197,7 @@ android.add_resources = electrum/gui/qml/android_res/layout:layout
 #android.ouya.icon.filename = %(source.dir)s/data/ouya_icon.png
 
 # (str) XML file to include as an intent filters in <activity> tag
-android.manifest.intent_filters = contrib/android/bitcoin_intent.xml
+android.manifest.intent_filters = contrib/android/palladium_intent.xml
 
 # (str) launchMode to set for the main activity
 android.manifest.launch_mode = singleTask

contrib/android/palladium_intent.xml

@@ -3,6 +3,6 @@
   <action android:name="android.nfc.action.NDEF_DISCOVERED"/>
   <category android:name="android.intent.category.DEFAULT" />
   <category android:name="android.intent.category.BROWSABLE" />
-  <data android:scheme="bitcoin" />
+  <data android:scheme="palladium" />
   <data android:scheme="lightning" />
 </intent-filter>