feat: [FC-86] Added plugin slots for catalog page

[PKulkoRaccoonGang]

Description

Added plugin-slots for Course Catalog page.

Useful information

• Figma design
• Catalog About Page API Design
• courses.html
• Paragon DataTable component

Initial setup

1. Clone and install the tutor-mfe plugin from the draft PR that adds support for Catalog MFE.
2. Go to http://apps.local.openedx.io:1998/catalog/courses

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.95%. Comparing base (96af586) to head (5bc2906).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #63      +/-   ##
==========================================
+ Coverage   98.87%   98.95%   +0.07%     
==========================================
  Files          97      105       +8     
  Lines         981     1055      +74     
  Branches      165      162       -3     
==========================================
+ Hits          970     1044      +74     
  Misses         11       11              

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[brian-smith-tcril]

Overall these are looking great!

I left a few comments, looking forward to hearing your thoughts!

[brian-smith-tcril]

Overall looking great! Couple small things.

[brian-smith-tcril]

LGTM!