Show success dialog after finish visit questionnaire is saved

[calmwalija]

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

Fixes https://github.com/opensrp/fhir-resources/issues/470

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

[codecov]

Codecov Report

Merging #1913 (fadadbc) into mwcore-dev (7cca3a0) will decrease coverage by 0.01%.
The diff coverage is 68.80%.

@@               Coverage Diff                @@
##             mwcore-dev    #1913      +/-   ##
================================================
- Coverage         64.46%   64.45%   -0.02%     
- Complexity          816      826      +10     
================================================
  Files               139      140       +1     
  Lines              5110     5204      +94     
  Branches            837      860      +23     
================================================
+ Hits               3294     3354      +60     
- Misses             1329     1348      +19     
- Partials            487      502      +15     

Flag	Coverage Δ
engine	64.45% <68.80%> (-0.02%)	⬇️

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

Impacted Files	Coverage Δ
...e/data/local/register/PatientRegisterRepository.kt	0.00% <0.00%> (ø)
...r/fhircore/engine/domain/repository/RegisterDao.kt	40.00% <0.00%> (-10.00%)	⬇️
...hircore/engine/util/extension/ResourceExtension.kt	70.83% <0.00%> (-0.60%)	⬇️
...smartregister/fhircore/engine/sync/NetworkState.kt	26.66% <26.66%> (ø)
...egister/fhircore/engine/ui/login/LoginViewModel.kt	66.97% <66.66%> (-0.01%)	⬇️
...ster/fhircore/engine/task/FhirCarePlanGenerator.kt	64.63% <73.68%> (+2.13%)	⬆️
...rtregister/fhircore/engine/sync/SyncBroadcaster.kt	81.81% <73.91%> (-14.34%)	⬇️
...rtregister/fhircore/engine/ui/login/LoginScreen.kt	76.47% <76.19%> (+0.28%)	⬆️
...e/engine/data/local/register/dao/HivRegisterDao.kt	83.17% <88.00%> (+0.54%)	⬆️
...ister/fhircore/engine/auth/AccountAuthenticator.kt	73.33% <100.00%> (+0.55%)	⬆️
... and 5 more

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