Added Large objects (LOB) functionality

[tusharad]

This PR introduces the Database.Oracle.Simple.LOB module,

https://odpi-c.readthedocs.io/en/latest/functions/dpiLob.html

• which provides functionality for handling Oracle Large Objects (LOBs), such as CLOB, BLOB, and NCLOB.
• Additionally, it includes a suite of test cases to ensure the correct behavior of the module's functions.
• Supports operations such as opening, closing, copying, trimming, and modifying LOBs.
• I have added haddock documentation for LOB module to ensure 100% coverage.
• Let me know if anything else is needed.

Thanks! @dmjio

[dmjio]

very cool