Integration with Key module

Created MR with following:

• Add key module in dev dependency
• Update configuration form allowing to use the Key module to get api key and shared secret.
• Manually created a simple authentication key using file key provider and used in config form for key based authentication.
• Added new getCredentials() to retrieve API key and shared secret from keyValue or config as per key module used.
• Verified connection is successful with key module as well as with config.

How to use key module with Acquia SEO Content Insights:

1. Require and install key module.
2. Create new key with file key provider or any other, I am using the file key provider to create the Conductor credentials key.
3. Add required details to file, i.e. api_key and shared_secret as json.
4. Visit /admin/config/development/conductor:
   • You will see a new checkbox option(Use Key module for API credentials storage) under the API Credentials.
   • Check the checkbox option.
   • The API Key dropdown field will appear, allowing you to select the key from the list.
   • Choose the Conductor credentials key.
   • Click on Save configurations.

5. You will receive a success or error message based on the data in the file path provided in the key.

Remaining work:

• Update Acquia SEO Content Insights extention to support key module integration.
• Verified the functionality.
• Add test coverage for key module integration.