OM-79: eslint fix, new navbar contribs init, draft pages

[olewandowski1]

OM-79

REQUIRED PR

Changes:

• Added eslint config.
• Created 3 entries (Voucher List, Voucher Acquirement, Voucher Assignment) to Workers and Vouchers.
• Created initial voucher's pages.

[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

0.0% Coverage
0.0% Duplication

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[github-advanced-security]

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[olewandowski1]

NOTE: TODO comment will be addressed after BE implementation. Because of that SonarCloud Code workflow failed.