adding trailing slashes in BaseLink

[stephiescastle]

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Description

Supports:

• https://github.com/nasa-jpl/www/issues/615

Adds a trailing slash to all links regardless if it's a router link or not. Checks urls for files and query params.

Instructions to test

Not testable in Storybook as we use a mock component for NuxtLink. Best way to test is in www. To do this locally:

1. in www, replaced the @explorer-1 packages in /apps/frontend/package.json with the paths in /README.md
2. pnpm i
3. make frontend-local

Tested in the following environments/browsers:

Operating System

• macOS
• iOS
• iPadOS
• Windows

Browser

• Chrome
• Firefox ESR
• Firefox
• Safari
• Edge

[Scotchester]

Seeing trailing slashes on listing links now!