[WIP]Feature Development: Changes to the BFF Architecture

[DoisLONG]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Introduced a BFF layer to optimize frontend-backend communication structure, enhancing data processing capabilities and system maintainability.

Which issue(s) this PR fixes:

Fixes #37

Special notes for your reviewer:

This PR only includes the base structure and example interfaces.

Does this PR introduce a user-facing change?:

NONE

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[kubeedge-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
To complete the pull request process, please assign shelley-baoyue after the PR has been reviewed.
You can assign the PR to them by writing /assign @shelley-baoyue in a comment when ready.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment