fix(Breadcrumbs): add missing aria labels & allow navigation with arrow keys

[Lukas742]

• Add missing aria labels
• Use unordered list to display items
• Only focus first or previously focused item with tab
• Allow right and left navigation between breadcrumbs with arrow keys

[coveralls]

Pull Request Test Coverage Report for Build 744799268

• 6 of 13 (46.15%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.1%) to 79.597%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
packages/main/src/components/Breadcrumbs/index.tsx	6	13	46.15%

Totals
Change from base Build 744518255:	-0.1%
Covered Lines:	2766
Relevant Lines:	3475

---

💛 - Coveralls

[github-actions]

Size Change: +811 B (0%)

Total Size: 191 kB

Filename	Size	Change
packages/main/dist/Breadcrumbs.js	1.61 kB	+811 B (+102%)	🆘

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