[MTRHO] [RFE] Validate Project name with the source cluster after a certain amount of time

Description:  On the “Source cluster and project” page in the mtrho wizard, the project name is not being validated until a click is made outside of the input field, hence keeping the “Next” button disabled till then. This RFE is to validate the project name with the source cluster after a certain amount of time of typing paused for the field.

Version-Release number of selected component (if applicable):
Source GCP 4.6

Target GCP 4.11

Steps to Reproduce: 

1. Login to the console
2. Create a namespace on target, and try importing a namespace from the source cluster using the Import from Cluster wizard.
3. Enter the source cluster details and then the project name on the first page of the wizard.

Actual Result: “Project name” is not validated with the source cluster until a click is done outside the Project name field, hence blocking the Next button to become enabled.

Expected result: “Project name” should be validated and “Next” button should be enabled after no typing is being done for sometime.