Sharing Functionality

[alperozturk96]

Main issue: nextcloud/files-clients#41

Technical Notes:

The networking architecture is completely different. The Notes app does not use the internal Android Account class and does not have User or ClientFactory. Instead, it uses SingleSignOnAccount and a custom Account entity. Retrofit is used for networking operations.

Some logic does not exist in the Notes app, such as oc-capability checks, encryption checks, and MDM checks. Even the Android library is not used in the Notes app. The Note entity does not have canReshare, encrypted, note’s note, and so on.

Activity should be used instead of Fragment because there is no root container for the fragment in the MainActivity.