Fix for Two voiceCommands contains the same string

[JulianKast]

Fixes #1677

This PR is [ready] for review.

Risk

This PR makes [no] API changes.

Testing Plan

• I have verified that I have not introduced new warnings in this PR (or explain why below)
• I have run the unit tests with this PR
• I have tested this PR against Core and verified behavior (if applicable, if not applicable, explain why below).
• I have tested Android, Java SE, and Java EE

Unit Tests

Unit test were added in VoiceCommandManagerTests

Core Tests

Try to upload two different voice commands with the same strings, observe error messages in logs, and voice commands do not upload.

Error message: Not all voice command strings are unique across all voice commands. Voice commands will not be set.

        List<String> list1 = Collections.singletonList("Command One");
        List<String> list2 = Collections.singletonList("Command One");

        VoiceCommand voiceCommand1 = new VoiceCommand(list1, new VoiceCommandSelectionListener() {
            @Override
            public void onVoiceCommandSelected() {
                Log.i(TAG, "Voice Command 1 triggered");
            }
        });

        VoiceCommand voiceCommand2 = new VoiceCommand(list2, new VoiceCommandSelectionListener() {
            @Override
            public void onVoiceCommandSelected() {
                Log.i(TAG, "Voice Command 2 triggered");
            }
        });

        sdlManager.getScreenManager().setVoiceCommands(Arrays.asList(voiceCommand1, voiceCommand2));

Also, verify that uploading voice commands work normally with each command having a unique string.

Core version / branch / commit hash / module tested against: 7.1.0 and Sync 3
HMI name / version / branch / commit hash / module tested against: generic_hmi 0.10.0, sdl_hmi 5.5.1

Summary

Added capability to VoiceCommandManager to check to make sure all voice commands are unique. If voice commands are not unique, it will print out an error message to the logs and return.

Changelog

Bug Fixes

• Added missing capability to VoiceCommandManager to check to make sure all voice commands are unique. If voice commands are not unique, it will print out an error message to the logs and return.

CLA

• I have signed the CLA

[codecov]

Codecov Report

Merging #1681 (6df490d) into develop (a0f080a) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@              Coverage Diff              @@
##             develop    #1681      +/-   ##
=============================================
+ Coverage      53.94%   53.95%   +0.01%     
- Complexity      5307     5310       +3     
=============================================
  Files            555      555              
  Lines          24562    24572      +10     
  Branches        3101     3104       +3     
=============================================
+ Hits           13251    13259       +8     
- Misses         10160    10161       +1     
- Partials        1151     1152       +1     

Impacted Files	Coverage Δ	Complexity Δ
...om/smartdevicelink/streaming/StreamPacketizer.java	56.89% <100.00%> (ø)	12.00 <0.00> (ø)
.../managers/screen/menu/BaseVoiceCommandManager.java	65.95% <100.00%> (+4.05%)	15.00 <3.00> (+4.00)
...tdevicelink/streaming/video/RTPH264Packetizer.java	71.00% <100.00%> (ø)	28.00 <0.00> (ø)
...nk/managers/audio/AudioDecoderCompatOperation.java	75.00% <0.00%> (-4.55%)	9.00% <0.00%> (-1.00%)