[Internally] Clean up the new BLE connectivity architect, new Socket connectivity architect codebase

[beastoin]

Related: https://github.com/orgs/BasedHardware/projects/1/views/1?pane=issue&itemId=78983750

Actions:

• [x] Deprecated the legacy BLE connectivity management, the legacy Socket connectivity management
• [x] Re-organize the new one to match with proposal, or make it more clearly.