Add Composition.entry and Composition.focus

[sharon2719]

IMPORTANT: Where possible all PRs must be linked to a Github issue

Fixes #3617

Engineer Checklist

• I have written Unit tests for any new feature(s) and edge cases for bug fixes
• I have added any strings visible on UI components to the strings.xml file
• I have updated the CHANGELOG.md file for any notable changes to the codebase
• I have run ./gradlew spotlessApply and ./gradlew spotlessCheck to check my code follows the project's style guide
• I have built and run the FHIRCore app to verify my change fixes the issue and/or does not break the app
• I have checked that this PR does NOT introduce breaking changes that require an update to Content and/or Configs? If it does add a sample here or a link to exactly what changes need to be made to the content.

Code Reviewer Checklist

• I have verified Unit tests have been written for any new feature(s) and edge cases
• I have verified any strings visible on UI components are in the strings.xml file
• I have verifed the CHANGELOG.md file has any notable changes to the codebase
• I have verified the solution has been implemented in a configurable and generic way for reuseable components
• I have built and run the FHIRCore app to verify the change fixes the issue and/or does not break the app

[codecov]

Codecov Report

Attention: Patch coverage is 55.76923% with 23 lines in your changes missing coverage. Please review.

Project coverage is 38.9%. Comparing base (f2b8910) to head (29d8973).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...core/engine/configuration/ConfigurationRegistry.kt	55.7%	18 Missing and 5 partials ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##              main   #3662   +/-   ##
=======================================
  Coverage     38.9%   38.9%           
- Complexity    1159    1164    +5     
=======================================
  Files          284     284           
  Lines        15060   15078   +18     
  Branches      2669    2671    +2     
=======================================
+ Hits          5860    5872   +12     
- Misses        8356    8361    +5     
- Partials       844     845    +1     

Flag	Coverage Δ
engine	62.5% <55.7%> (-0.1%)	⬇️
geowidget	16.0% <ø> (ø)
quest	25.1% <ø> (+<0.1%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...core/engine/configuration/ConfigurationRegistry.kt	67.9% <55.7%> (-0.4%)	⬇️

... and 1 file with indirect coverage changes

[pld]

looks much better! I made some suggestions to remove duplication, I think the unit you want to share is the reference not the section, please take a look, thank you