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/index.ts

@@ -1,12 +1,13 @@
 // runtime utils
 export { getFirst, getFirstEvent, getLastEvent, getNext, getPrevious } from './src/rundown-utils/rundownUtils.js';
 export { validatePlayback } from './src/validate-action/validatePlayback.js';
+export { validateTimes } from './src/validate-events/validateEvent.js';
+export { calculateDuration } from './src/validate-events/validateEvent.js';
 
 // rundown utils
 export { sanitiseCue } from './src/cue-utils/cueUtils.js';
 export { getCueCandidate } from './src/cue-utils/cueUtils.js';
 export { generateId } from './src/generate-id/generateId.js';
-export { calculateDuration } from './src/rundown-utils/rundownUtils.js';
 export { swapOntimeEvents } from './src/rundown-utils/rundownUtils.js';
 
 // format utils
@@ -18,5 +19,21 @@ export { millisToString } from './src/date-utils/millisToString.js';
 // time utils
 export { dayInMs, mts } from './src/timeConstants.js';
 
+// helpers from externals
+export { deepmerge } from './src/externals/deepmerge.js';
+
 // generic utilities
 export { isNumeric } from './src/types/types.js';
+
+// model validation
+export { validateEndAction, validateTimerType } from './src/validate-events/validateEvent.js';
+
+// feature business logic
+
+// feature business logic - excel import
+export {
+  type ExcelImportMap,
+  type ExcelImportOptions,
+  defaultExcelImportMap,
+  isExcelImportMap,
+} from './src/feature/excel-import/excelImport.js';