Added support for:
1. Default library/ prefix for docker hub if required.
2. Implemented manifest list support for upstream proxies. New table
introduced: `oci_image_index_mappings`
3. Fixed Secret issue on UI for both gitness and harness code
4. Code refactoring to bring controller inside wire and other minor
fixes around linting
5. Fixed few bugs around upstream proxy.

…one operation. (#3596)

### Description

This PR introduces two changes
1. Adding a check for user's name and email before cloning the code
inside the gitspace container. This will non-block non-harness repos.
2. Adding an explicit check for the media folder's path during VSCode
web setup.

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