feat: enable searching for engagements (resolves #2079(

[jobara]

Resolves #2079

• [x] Add Browse Engagement page
• [x] Remove Browse Projects page, and update/replace links to it
• [x] Change navigation link from Projects to Engagements
• [x] Add engagements I've joined page
  • [x] Joined as Consultation Participant
  • [x] Joined as a Community Connector
• [x] Add "My Engagements" link on dashboard to Engagements joined
• [x] Only show projects page for organizations
• [x] Add/update link on Dashboard to "Projects I'm running" for organizations
• [x] Update breadcrumbs as needed throughout TAE application

Stretch tasks filed as:

• 2181

• 2182

Prerequisites

If this PR changes PHP code or dependencies:

• [x] I've run composer format and fixed any code formatting issues.
• [x] I've run composer analyze and addressed any static analysis issues.
• [x] I've run php artisan test and ensured that all tests pass.
• [x] I've run composer localize to update localization source files and committed any changes.

If this PR changes CSS or JavaScript code or dependencies:

• [x] I've run npm run lint and fixed any linting issues.
• [x] I've run npm run build and ensured that CSS and JavaScript assets can be compiled.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.31%. Comparing base (0058963) to head (ff3f261). Report is 1 commits behind head on dev.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #2165 +/- ## ============================================ - Coverage 97.93% 97.31% -0.62% - Complexity 2147 2188 +41 ============================================ Files 333 338 +5 Lines 9799 9958 +159 ============================================ + Hits 9597 9691 +94 - Misses 202 267 +65 ```

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