Implement Save draft MVP functionality

[Rkareko]

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

Fixes #3541

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 20.00000% with 32 lines in your changes missing coverage. Please review.

Project coverage is 27.1%. Comparing base (6fc15b0) to head (b86ac44).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...e/quest/ui/questionnaire/QuestionnaireViewModel.kt	4.3%	22 Missing ⚠️
...re/quest/ui/questionnaire/QuestionnaireActivity.kt	0.0%	6 Missing ⚠️
...re/engine/util/extension/QuestionnaireExtension.kt	20.0%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##              main   #3596     +/-   ##
=========================================
- Coverage     27.1%   27.1%   -0.1%     
  Complexity     775     775             
=========================================
  Files          279     280      +1     
  Lines        14563   14606     +43     
  Branches      2608    2617      +9     
=========================================
+ Hits          3957    3967     +10     
- Misses       10065   10097     +32     
- Partials       541     542      +1     

Flag	Coverage Δ
engine	63.7% <63.6%> (-0.1%)	⬇️
geowidget	16.0% <ø> (ø)
quest	5.7% <3.4%> (+<0.1%)	⬆️

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

Files with missing lines	Coverage Δ
...tregister/fhircore/engine/ui/base/AlertDialogue.kt	79.6% <100.0%> (+0.9%)	⬆️
...re/engine/util/extension/QuestionnaireExtension.kt	55.3% <20.0%> (-1.6%)	⬇️
...re/quest/ui/questionnaire/QuestionnaireActivity.kt	3.7% <0.0%> (-0.1%)	⬇️
...e/quest/ui/questionnaire/QuestionnaireViewModel.kt	3.3% <4.3%> (+<0.1%)	⬆️

[f-odhiambo]

Quick feedback

1. Edit not working in the PR
2. The questionnaire is not dismissed once the user makes the selection
3. Add docs to accompany this PR
   CC @Rkareko

[Rkareko]

Quick feedback

1. Edit not working in the PR

2. The questionnaire is not dismissed once the user makes the selection

3. Add docs to accompany this PR
   CC @Rkareko

these have been addressed

[f-odhiambo]

LGTM