Add MPE page introduction content

[alissayarmantho]

Context

#3035

Add MPE page introduction content.

Implementation

Added content to website/src/views/mpe/MpeContainer.tsx and its corresponding styling.

Other Information

[vercel]

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nusmods-website – ./website

🔍 Inspect: https://vercel.com/nusmodifications/nusmods-website/bg9gew8mb
✅ Preview: https://nusmods-website-git-fork-alissayarmantho-master.nusmodifications.vercel.app

nusmods-export – ./export

🔍 Inspect: https://vercel.com/nusmodifications/nusmods-export/mqwoxabzs
✅ Preview: https://nusmods-export-git-fork-alissayarmantho-master.nusmodifications.vercel.app

[codecov]

Codecov Report

Merging #3183 (3c70f89) into master (1cc25c8) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master    #3183   +/-   ##
=======================================
  Coverage   55.40%   55.40%           
=======================================
  Files         254      254           
  Lines        5315     5315           
  Branches     1226     1226           
=======================================
  Hits         2945     2945           
  Misses       2370     2370           

Impacted Files	Coverage Δ
website/src/views/mpe/MpeContainer.tsx	0.00% <0.00%> (ø)

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[nusmods-deploy-bot]

Deployment preview for 3c70f899 ready at http://6008824ecd084a0d21f81b76--nusmods-deploy-preview.netlify.app

[taneliang]

Hmm the formatting is a bit off. Could you run Prettier on this? You could set up your editor to automatically format on save for convenience

[alissayarmantho]

Alright fixed.

[taneliang]

Nice, thanks :D