AC-794 Notify users when active visits or formlist pages are empty

[rishabh-997]

Description of what I changed

1. Added snack bar "Select Form entry from the menu" with the action button to take you there.
2. Added snack bar "No Forms Found, try restarting the app." when the form list is empty.

Issue I worked on

JIRA Issue: https://issues.openmrs.org/browse/AC-794

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.

[rishabh-997]

[codecov-commenter]

Codecov Report

Merging #771 into master will decrease coverage by 0.03%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #771      +/-   ##
==========================================
- Coverage   11.73%   11.69%   -0.04%     
==========================================
  Files         251      251              
  Lines       10867    10898      +31     
  Branches     1107     1108       +1     
==========================================
  Hits         1275     1275              
- Misses       9493     9524      +31     
  Partials       99       99              

Impacted Files	Coverage Δ
...s/mobile/activities/formlist/FormListFragment.java	0.00% <0.00%> (ø)
...rs/mobile/activities/introduction/IntroActivity.kt	0.00% <0.00%> (ø)
...s/mobile/activities/introduction/SplashActivity.kt	0.00% <0.00%> (ø)
...ivities/visitdashboard/VisitDashboardFragment.java	0.00% <0.00%> (ø)
...g/openmrs/mobile/utilities/ApplicationConstants.kt	10.52% <0.00%> (-0.59%)	⬇️

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[f4ww4z]

@rishabh-997 Just a few small changes before we can merge.

[f4ww4z]

@rishabh-997 Can you fix the merge conflict caused by #767 ? We had to get that PR merged and out of the way first.