SDKS-3697 Prevent duplicated notification on the SDK

[rodrigoareis]

JIRA Ticket

SDKS-3697 Prevent duplicated notification on the SDK

Description

The Android SDK does not verify whether a push notification with an identical message identifier has already been stored, delegating this responsibility to the application developer. This PR include the following changes:

• Added a new getNotificationByMessageId method to the StorageClient and FRAClient
• Updated the logic to check whether a payload was already persisted
• Update unit tests

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 4 lines in your changes missing coverage. Please review.

Project coverage is 64.47%. Comparing base (9e3be1e) to head (d4b7b38).
Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
...g/forgerock/android/auth/DefaultStorageClient.java	33.33%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             develop     #465   +/-   ##
==========================================
  Coverage      64.47%   64.47%           
- Complexity      1668     1670    +2     
==========================================
  Files            256      256           
  Lines           8641     8653   +12     
  Branches         918      921    +3     
==========================================
+ Hits            5571     5579    +8     
  Misses          2662     2662           
- Partials         408      412    +4     

Flag	Coverage Δ
unit-tests	64.47% <66.66%> (+<0.01%)	⬆️

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[spetrov]

LGTM! 👍🏻