feature/techs select redo

[JoshuaHinman]

Description

This is a re-submission of the tech selections endpoint PR, on a fresh branch with recent updates included. Previous issues should be addressed.
To apply the database changes in this PR, run yarn migrate and yarn push

This PR adds a new endpoint voyages/teams/{teamId}/techs/selections, allowing teams to designate tech stack items as "Selected" within their categories. It enforces a maximum of 3 selections per category, defined by const MAX_SELECTION_COUNT.

The teamTechStackItem model has been updated with Boolean value isSelected.

There are e2e test for the following responses:
-200 successful update
-400 max selections per category exceeded
-400 invalid teamid
-401 unauthorized- uses old JWT test

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Feature updates / changes
• Tests
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

This has been tested in swagger and with yarn test:e2e techs

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 tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have updated the change log

[cherylli]

thanks! working as intended, all tests passed!

[timDeHof]

looks good!! Unit and e2e tests passed. also swagger works too.