Add common synonyms to the search analyzer

[abeglova]

The search results of
https://learn.mit.edu/search/?q=math

are awful

https://learn.mit.edu/search/?q=mathematics are much better

Opensearch allows you to store lists of synonyms in the analyzer so math and mathematics would be treated as equivalent by the search. Saliha made a list of course relevant abbreviations and shortened words which we can add add to the analyzer we can start with the following list:

Shortened word list
Math
chem
bio
aero
neuro
quant
Econ
biotech
thermo
astro
fintech

Abreviations

AI
NLP
LLM
SEO