refactor: DynamicEndpoint for Video API

[SMadani]

Finishes the migration to DynamicEndpoint for Video API, just like with other APIs that have been refactored.

[codecov-commenter]

Codecov Report

Merging #503 (d90251b) into main (1d3f62c) will decrease coverage by 0.28%.
Report is 1 commits behind head on main.
The diff coverage is 100.00%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #503      +/-   ##
============================================
- Coverage     94.61%   94.34%   -0.28%     
+ Complexity     2864     2755     -109     
============================================
  Files           422      399      -23     
  Lines          6911     6651     -260     
  Branches        440      436       -4     
============================================
- Hits           6539     6275     -264     
- Misses          200      203       +3     
- Partials        172      173       +1     

Files	Coverage Δ
.../com/vonage/client/video/CreateSessionRequest.java	100.00% <ø> (ø)
...ge/client/video/ListStreamCompositionsRequest.java	100.00% <ø> (ø)
...a/com/vonage/client/video/MuteSessionResponse.java	100.00% <100.00%> (ø)
...main/java/com/vonage/client/video/VideoClient.java	99.31% <100.00%> (+0.06%)	⬆️
...om/vonage/client/video/VideoResponseException.java	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes