InstallerFragment: Relocate to settings instead of onboarding

* This makes onboarding minimal and only required screens are shown
* SessionInstaller is the recommended choice, user who needs a different can configure in settings
* Instead of showing minimal list, show installer fragment that contains more information
* Also show all installers like before

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

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

@@ -169,7 +169,6 @@
     <string name="pref_ui_title">अनुकूलन</string>
     <string name="download_speed_estimating">आकलन</string>
     <string name="action_ok">ठीक है</string>
-    <string name="onboarding_installer_select">एक उपयुक्त इंस्टॉलर चुनें</string>
     <string name="pref_install_mode_title">इंस्टॉल करने का तरीका</string>
     <string name="title_account_manager">खाते</string>
     <string name="title_apps_sale">बिक्री पर ऐप्स</string>