Add/Remove new member to team (#483)

Search as user type, fix datalist.

Code Format

Fix users search theme

add and remove user from team

Add interface and user search and check for being team member or not

bottom sheet menu and few refactors

Co-authored-by: 6543 <6543@noreply.gitea.io>
Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://gitea.com/gitnex/GitNex/pulls/483
Reviewed-by: 6543 <6543@noreply.gitea.io>

app/src/main/AndroidManifest.xml

@@ -80,6 +80,7 @@
         <activity android:name=".activities.SettingsSecurityActivity" />
         <activity android:name=".activities.SettingsTranslationActivity" />
         <activity android:name=".activities.SettingsReportsActivity" />
+        <activity android:name=".activities.AddNewTeamMemberActivity" />
     </application>
 
 </manifest>