WIP: Feature / remove handler from sdl remote display

[BrettyWhite]

WIP

Fixes #858

This PR is not ready for review.

Risk

This PR makes no API changes.

Testing Plan

[Describe how you plan to unit test the changes in this PR]

Summary

Handle keep alive logic in the encoder. This will be updated and fixed in a future release

CLA

• I have signed the CLA

[codecov-io]

Codecov Report

Merging #859 into develop will increase coverage by 0.01%.
The diff coverage is 50%.

@@              Coverage Diff              @@
##             develop     #859      +/-   ##
=============================================
+ Coverage      44.63%   44.64%   +0.01%     
- Complexity      3187     3189       +2     
=============================================
  Files            399      399              
  Lines          18196    18220      +24     
  Branches        1761     1765       +4     
=============================================
+ Hits            8121     8135      +14     
- Misses          9745     9751       +6     
- Partials         330      334       +4

Impacted Files	Coverage Δ	Complexity Δ
...n/java/com/smartdevicelink/proxy/SdlProxyBase.java	4.64% <0%> (-0.01%)	6 <0> (ø)
...smartdevicelink/encoder/VirtualDisplayEncoder.java	30.24% <50%> (+5.53%)	10 <2> (+2)	⬆️
...rtdevicelink/streaming/video/SdlRemoteDisplay.java	63.33% <66.66%> (+0.09%)	5 <0> (ø)	⬇️

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