feat: Add explore page skeleton

[steverydz]

Done

Built out the skeleton of the explore page

Note: This won't actually work until the recommendation service is ready

How to QA

• Go to https://snapcraft-io-5014.demos.haus/explore
• Compare to design

Testing

• This PR has tests
• No testing required (explain why): Not a complete feature

Issue / Card

Fixes https://warthogs.atlassian.net/browse/WD-18954

[webteam-app]

Demo

Jenkins

demos.haus

[github-actions]

[Inclusive naming check] _{reported by reviewdog 🐶}
[warning] Dummy may be insensitive, use placeholder, sample instead

[codecov]

Codecov Report

Attention: Patch coverage is 6.81818% with 41 lines in your changes missing coverage. Please review.

Please upload report for BASE (explore-page@5672a67). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
static/js/store/hooks/useCategories.ts	0.00%	8 Missing ⚠️
static/js/store/hooks/useNewSnaps.ts	0.00%	8 Missing ⚠️
static/js/store/hooks/usePopularSnaps.ts	0.00%	8 Missing ⚠️
static/js/store/hooks/useTopRatedSnaps.ts	0.00%	8 Missing ⚠️
static/js/store/hooks/useUpdatedSnaps.ts	0.00%	8 Missing ⚠️
...ic/js/store/components/SearchInput/SearchInput.tsx	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##             explore-page    #5014   +/-   ##
===============================================
  Coverage                ?   52.39%           
===============================================
  Files                   ?      160           
  Lines                   ?     3577           
  Branches                ?      551           
===============================================
  Hits                    ?     1874           
  Misses                  ?     1566           
  Partials                ?      137           

Files with missing lines	Coverage Δ
static/js/base/ga.ts	22.58% <ø> (ø)
.../js/publisher/components/Navigation/Navigation.tsx	46.00% <ø> (ø)
static/js/store/pages/Store/Store.tsx	93.33% <ø> (ø)
...ic/js/store/components/SearchInput/SearchInput.tsx	83.33% <75.00%> (ø)
static/js/store/hooks/useCategories.ts	0.00% <0.00%> (ø)
static/js/store/hooks/useNewSnaps.ts	0.00% <0.00%> (ø)
static/js/store/hooks/usePopularSnaps.ts	0.00% <0.00%> (ø)
static/js/store/hooks/useTopRatedSnaps.ts	0.00% <0.00%> (ø)
static/js/store/hooks/useUpdatedSnaps.ts	0.00% <0.00%> (ø)