AC-626: Add Provider Dashboard

[deepakpsad]

Description of what I changed

• Added a provider dashboard
• Created a placeholder fragment for Patient-Provider relationship
• Created a placeholder fragment for Provider-Provider relationship

Issue I worked on

JIRA Issue: https://issues.openmrs.org/browse/AC-626

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.

[codecov-io]

Codecov Report

Merging #619 into master will increase coverage by 0.02%.
The diff coverage is 10.2%.

@@            Coverage Diff             @@
##           master     #619      +/-   ##
==========================================
+ Coverage    14.3%   14.32%   +0.02%     
==========================================
  Files         196      202       +6     
  Lines        9104     9200      +96     
  Branches      785      790       +5     
==========================================
+ Hits         1302     1318      +16     
- Misses       7723     7801      +78     
- Partials       79       81       +2

Impacted Files	Coverage Δ
...s/providerdashboard/ProviderDashboardActivity.java	0% <0%> (ø)
...oviderdashboard/ProviderDashboardPagerAdapter.java	0% <0%> (ø)
...gerdashboard/ProviderManagerDashboardFragment.java	0% <0%> (ø)	⬆️
...tientrelationship/PatientRelationshipFragment.java	0% <0%> (ø)
...agerdashboard/addprovider/AddProviderFragment.java	0% <0%> (ø)	⬆️
...s/providerdashboard/ProviderDashboardContract.java	0% <0%> (ø)
...d/ProviderManagerDashboardRecyclerViewAdapter.java	0% <0%> (ø)	⬆️
...iderrelationship/ProviderRelationshipFragment.java	0% <0%> (ø)
.../providerdashboard/ProviderDashboardPresenter.java	50% <50%> (ø)
... and 6 more

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[f4ww4z]

Thanks @deepak140596 , see my comments below.

[f4ww4z]

This should be a Presenter code, not an activity one. You should use the presenter to get the provider from an intent.

[f4ww4z]

Show an error toast here so the user knows, don't leave it empty.

[deepakpsad]

The toast messages for different failures are present in the ProviderRepository class. These custom callbacks are for logic for updating views in case of failures. If I add a toast here, two toasts are show to the user back to back.

I provided toasts in the ProviderRepository because we can differentiate between different failed cases easily (network not connected or failed api callback).

[f4ww4z]

@deepak140596 Ok. In that case, can you show an indefinite Snackbar that says the connection failed, with a button to retry loading?

[deepakpsad]

@f4ww4z , yes. I have added that. Please review it.

[f4ww4z]

Good work @deepak140596