feat(stark-ui): route-search - add support for partial matching

[SuperITMan]

ISSUES CLOSED: #1335

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NationalBankBelgium/stark/blob/master/CONTRIBUTING.md#-commit-message-guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[X] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

There is no support for partial matching in StarkRouteSearchComponent.

Issue Number: #1335

What is the new behavior?

The route-search component now supports the partial matching.
Typing 'logou' proposes the route 'App Logout'.

Does this PR introduce a breaking change?

[ ] Yes
[X] No

Other information

[coveralls]

Coverage increased (+0.001%) to 94.069% when pulling c9802d7 on SuperITMan:feature/stark-ui-improve-route-search-component into d90bc5e on NationalBankBelgium:master.

[nicanac]

Nice, thank you