AC-769 Added chucker support for API Calls

[dino-saurabh]

Description of what I changed

1. Added chucker support, all the functionality works as expected,
2. I have added that guava dependency because it resolves duplicate classes problem which I faced while making changes to the dependencies in gradle

Issue I worked on

JIRA Issue: https://issues.openmrs.org/browse/AC-769

Checklist: I completed these to help reviewers :)

• My pull request only contains ONE single commit
  (the number above, next to the 'Commits' tab is 1).

• I have added tests to cover my changes. (If you refactored
  existing code that was well tested you do not have to add tests)

• All new and existing tests passed.

• My pull request is based on the latest changes of the master branch.

[dino-saurabh]

@f4ww4z Sir please review!!

[codecov-commenter]

Codecov Report

Merging #750 into master will increase coverage by 0.00%.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master     #750   +/-   ##
=======================================
  Coverage   11.83%   11.84%           
=======================================
  Files         237      237           
  Lines       10576    10571    -5     
  Branches     1018     1018           
=======================================
  Hits         1252     1252           
+ Misses       9242     9237    -5     
  Partials       82       82           

Impacted Files	Coverage Δ
...ava/org/openmrs/mobile/api/RestServiceBuilder.java	0.00% <0.00%> (ø)
...n/java/org/openmrs/mobile/application/OpenMRS.java	0.00% <0.00%> (ø)

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[f4ww4z]

LGTM @LuGO0