Created mock data for callers table, incidents table, and dispatch table.

[hastiabbasi]

In my most recent commit, I changed the file name of fill_tables to follow the correct order for migrations.

[blbergo]

I don't have time to test it rn on my machine but it looks great. My only concern could be that you are using a foreign key that might not exist yet since they all depend on each other, if it doesn't work you may have to create all of them at once then use UPDATE statements to add the values after creation.