Create companies route

[souzadediogo]

Description

Creates companies route with:

• Router in main server
• Basic CRUD Operations (GET/POST/PUT/DELETE)
• Get: retrieves all entries (no pagination)
• Post: creates multiple new companies (expects array of companies)
• Put: updates multiple companies
• Delete: delete single company passed in as req.query

Type of change:

• Breaking change: creates a new feature from scratch

How Has This Been Tested?

• Not tests, waiting for frontend to make sure data structures and needs will be met;

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules