feat: [Local API Server] Revamp UIUX of model selection and indicators

[imtuyethan]

Problems

Problem #1

Related to this issue: #1910

Currently, users are allowed to send requests to multiple models at the same time (1 active local model + multiple remote models) but the API server GUI does not reflect that:

Problem #2

Users can't see model ID to send request

Solution

Figma link: https://www.figma.com/file/ytn1nRZ17FUmJHTlhmZB9f/Jan-App?type=design&node-id=1200-116788&mode=design&t=lvE3hVidcZbbnSpg-4

1. Inform users that they can concurrently send requests to one active local model and multiple remote models

2. Separate local model & remote model & add model ID

In-scope:

• Separate local model & remote model
• Add model ID under model name in model selection menu -> users can click on it to copy model ID
• Add button shortcut my models -> this will direct users to Settings / My models

Note that this component will apply to threads as well!

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Out-of-scope:
In the future we will add more things to this as part of remote model UI revamp: #994

[Van-QA]

@urmauur extra scroll arrow displayed when nothing to scroll in the remote tab ❌
The issue occurs only when users visit the Local tab first (with scroll down arrow) and then moving to the Remote tab

[Van-QA]

Tested and looking good on Jan v0.4.6-279 ✅