feat: Revamp navigation bar (#6031)

closes: #4428

Testing for fetchMoreRecords is pending, along with component tests

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Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>

packages/twenty-ui/src/utilities/index.ts

@@ -1,3 +1,4 @@
 export * from './color/utils/stringToHslColor';
+export * from './isDefined';
 export * from './state/utils/createState';
 export * from './types/Nullable';