* Adds information text further explaining estimated cost.
* Minor tweak to cost messaging
* Updated unit tests
* Added text and link for capacity planner when choosing manual RUs
- removed the `isFixed` check in both new and old settings tab so that the options to switch between manual and autoscale shows up for fixed collections
- updated the message below the text box to inform the users that the max RU for fixed collections is 10000
- updated validation rule so that the max RU cannot exceed 10000 for fixed collections for both autoscale and manual
* '[ID: 833708][Screen Reader - CosmosDB – New KeySpace] Visual label(Keyspace id) and aria-label(Database id) is not same for Keyspace id edit field.'
* 'update on aria-label'
