Update SOC Manifest for Caliptra 2.0 (#1797)

* Update SOC Manifest for Caliptra 2.0

- Updated the "Preamble" section to include detailed descriptions of the Version, SVN, Flags, and other fields.
- Reformatted field tables for improved readability and consistency.
- Added new fields such as IMC Vendor ECC Signature, IMC Vendor LMS Signature, IMC Owner ECC Signature, and IMC Owner LMS Signature.
- Expanded "Image Metadata Entry" section with new fields like Image Identifier, Flags, Image Load Address, Classification, Version Number, and Version String.
- Revised "Image Metadata Collection" section for clarity and added a new table format.