Implement catalog functionality

[vamsimanohar]

Requirements.

• Taking input configuration from user for each catalog.
• Configuration should cover all the required details to connect to the catalog instance.
• Securely store any confidential data mentioned in the configuration.

Solution Overview (Tech tasks) <TODO>

[penghuo]

Question:

1. Is there any DML support for catalog? e.g. CREATE CATALOG catalog, SHOW CATALOGS. Does user could create catalog dynamically?
2. Does the default catalog mapping to the current OpenSearch cluster?
3. What auth type is support for CATALOG? Basic Auth? Access-Key/Id?

[vamsimanohar]

Will include all of these into separate tasks.