Added capability to get Publisher provided extras from InMobi Adapter

[neelabh-parui-inmobi]

• Added null check for account ID.
• Added capability to get Publisher Provided extras through MaxAdapterParamaters and passing it to InMobi SDK

[jplianghu]

Hi @neelabh-parui-inmobi,

Thank you for submitting this pull request. I've reviewed the changes and have some questions for clarification:

Added null check for account ID.

This functionality is already implemented in the adapter, so there may be no need to add it again.

Added capability to get Publisher Provided extras through MaxAdapterParamaters and passing it to InMobi SDK

Could you explain the purpose of this change? It appears you are aiming to pass parameters to the InMobi SDK via local extra parameters, which is not standard practice for us.
Typically, the Placement ID configured in the Ad Unit is sufficient for identifying the publisher and accessing any setup configurations on your dashboard. If the Placement ID does not meet your needs, you might consider adding additional fields.

Looking forward to your response.