Add Common OCI Client Library

[cboffa13]

Description

This is a proof-of-concept for a common OCI client library. These changes add a common library which can be shared across many mcp servers. Notably this library exports a decorator called @with_oci_client which automatically configures a client based on the SDK client class given so we dont need the get_identity_client, get_compute_client etc... functions

Fixes # (issue) - TBD

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

This has only been implemented on the "Identity MCP Server"

• You should be able to use the all of the existing features of the indentity mcp server without loss of functionality

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules