[Feat] search result should include review statistics

[davidlhw]

Features

currently, the search result statistics is hardcoded but it should reflect the accurate statistics based on what's available on the database

Core

• review statistics should be accurate
• professor's course count should be accurate
• course's professor count should be accurate

Optional

Implementation

update SQL in these functions:

• src/common/functions/searchCourse.ts
• src/common/functions/searchProf.ts

update hardcoded stat value at:

• src/common/components/SearchResult/SearchResultContent/SearchResultContent.tsx#L78-L79

• src/common/components/SearchResult/SearchResultContent/SearchResultContent.tsx#L91-L92

Potential Issues