Refactored Schedule.vue contain more than one month. Started working on selecting cells.

src/types/schedule-data.d.ts

@@ -1,5 +1,5 @@
 type ScheduleData = [
-    ...ScheduleRow[]
+    ...ScheduleMonth[]
 ]
 
 type Employee = {
@@ -12,4 +12,15 @@ type Employee = {
 type ScheduleRow = {
     dates : (Date | null)[],
     employees : Employee[]
+}
+
+type ScheduleMonth = [
+    ...ScheduleRow[]
+]
+
+type Coordinates = {
+    mIndex : number,
+    rIndex : number,
+    eIndex : number,
+    dIndex : number
 }