fix: failing tests for raw queries

[HansGabriel]

Description

The following PR fixes the following:

1. Raw queries for getting the top trekkers for a particular test by changing table names and fields to their snake case name
2. Raw queries for getting the number of tests a player is top 3 in by changing table names and fields to their snake case name
3. Change mocked tests for getting top trekker details
4. Change mocked tests for getting the number of tests a player is top 3 in

Code Snippets

Added this type since raw SQL returns snake_cased keys for objects

export type _PlayersHighscore = {
  id: string;
  user_first_name: string;
  user_image_url: string;
  play_created_at: Date;
  high_score: number;
};

Screenshots/Images

N/A

How Has This Been Tested?

Changed unit tests for raw sql queries

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Name	Status	Preview	Updated (UTC)
test-trek-backend	✅ Ready (Inspect)	Visit Preview	Dec 9, 2023 7:41pm