feat: excel import (#527)

* refactor: simplify excel import

* chore: add external deepmerge utility

* chore: create import map utilities

* chore: increase size limits on uploads

* style: small presentation tweaks

* feat: resolve times on excel import, refs #508

packages/utils/src/rundown-utils/rundownUtils.ts

@@ -1,7 +1,5 @@
 import { isOntimeEvent, OntimeEvent, OntimeRundown, OntimeRundownEntry } from 'ontime-types';
 
-import { dayInMs } from '../timeConstants.js';
-
 /**
  * Gets first event in rundown, if it exists
  * @param {OntimeRundownEntry[]} rundown
@@ -113,20 +111,6 @@ export function getPreviousEvent(rundown: OntimeRundownEntry[], currentId: strin
   return null;
 }
 
-/**
- * @description calculates event duration considering midnight
- * @param {number} timeStart
- * @param {number} timeEnd
- * @returns {number}
- */
-export const calculateDuration = (timeStart: number, timeEnd: number): number => {
-  // Durations must be positive
-  if (timeEnd < timeStart) {
-    return timeEnd + dayInMs - timeStart;
-  }
-  return timeEnd - timeStart;
-};
-
 /**
  * @description swaps two OntimeEvents in the rundown
  * @param {OntimeRundown} rundown