Rework search suggestions navigation

[jonandernovella]

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

List of changes made

• Added handleAutocompleteNavigation to handle arrow navigation over suggestions
• Added handleInputToAutocompleteFocus to handle the focus switch from search input to suggestions list

Testing

• Usual procedure

Definition of Done checklist

• I have made an effort making the commit history understandable
• I have performed a self-review of my own code and commented any hard-to-understand areas
• Tests and lint/format validations are passing
• My changes generate no new warnings

[ghost]

Code review. Looks reasonable.

[HenrikeW]

starting review

[HenrikeW]

Think this is awesome! Haven't looked at the linter stuff yet though.

[HenrikeW]

Okay, I'd ignore the linter in this case. It makes sense to keep the two functionalities apart.
Seems like you can ignore a code block with

// jscpd:ignore-start

some code 

// jscpd:ignore-end

Haven't tried it because I can't run the linter locally and didn't wanna push.