feat: Add new properties to Messages API

[SMadani]

Various updates to reflect recent changes in the Messages v1 spec. Description of these is in each commit headline.

[codecov-commenter]

Codecov Report

Merging #504 (d8352de) into main (8cdb975) will decrease coverage by 0.13%.
The diff coverage is 85.98%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #504      +/-   ##
============================================
- Coverage     94.34%   94.22%   -0.13%     
- Complexity     2755     2797      +42     
============================================
  Files           399      405       +6     
  Lines          6651     6748      +97     
  Branches        436      444       +8     
============================================
+ Hits           6275     6358      +83     
  Misses          203      203              
- Partials        173      187      +14     

Files	Coverage Δ
...ava/com/vonage/client/messages/MessageRequest.java	97.56% <100.00%> (+0.68%)	⬆️
...va/com/vonage/client/messages/MessagesVersion.java	100.00% <100.00%> (ø)
...onage/client/messages/internal/MessagePayload.java	94.28% <100.00%> (+0.73%)	⬆️
...om/vonage/client/messages/mms/MmsAudioRequest.java	100.00% <100.00%> (ø)
...om/vonage/client/messages/mms/MmsImageRequest.java	100.00% <100.00%> (ø)
...ava/com/vonage/client/messages/mms/MmsRequest.java	100.00% <100.00%> (ø)
...om/vonage/client/messages/mms/MmsVcardRequest.java	100.00% <100.00%> (ø)
...om/vonage/client/messages/mms/MmsVideoRequest.java	100.00% <100.00%> (ø)
...com/vonage/client/messages/sms/SmsTextRequest.java	100.00% <100.00%> (ø)
...a/com/vonage/client/messages/whatsapp/Context.java	100.00% <ø> (ø)
... and 8 more

[superchilled]

Looks good overall. Just wanted to check a couple of things because I couldn't see them in the changed files:

• For WhatsApp Inbound (all message types) add context.message_uuid and context.message_from
• For Viber Outbound (type video) add viber_service.duration and viber_service.file_size

Maybe you already updated these properties prior to this PR?

[SMadani]

Looks good overall. Just wanted to check a couple of things because I couldn't see them in the changed files:

• For WhatsApp Inbound (all message types) add context.message_uuid and context.message_from
• For Viber Outbound (type video) add viber_service.duration and viber_service.file_size

Maybe you already updated these properties prior to this PR?

Yep, they've been in the spec for a while and hence the SDK :)