feat(Chat): add deepseek support

[MadLongTom]

Link issues

fixes #5753

Summary By Copilot

Regression?

• Yes
• No

Risk

• High
• Medium
• Low

Verification

• Manual (required)
• Automated

Packaging changes reviewed?

• Yes
• No
• N/A

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• Merge the latest code from the main branch

Summary by Sourcery

Adds support for Deepseek by introducing a new MarkdownContent component for rendering chat messages.

New Features:

• Introduces a MarkdownContent component to render chat messages using Markdown formatting.
• Adds support for rendering code snippets with syntax highlighting and a copy button.
• Adds support for think tags to display messages in a specific style.
• Adds support for removing embeddings elements from the content.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request introduces a MarkdownContent component to render Markdown within the chat interface, enhancing message formatting and display capabilities. It also updates the Chats page to utilize this new component.

Sequence diagram for rendering a chat message with MarkdownContent

sequenceDiagram
  participant Chats.razor
  participant MarkdownContent

  Chats.razor->>MarkdownContent: Renders MarkdownContent with message.Content
  activate MarkdownContent
  MarkdownContent->>MarkdownContent: OnParametersSet()
  MarkdownContent->>MarkdownContent: GetMarkdown(message.Content)
  MarkdownContent->>MarkdownContent: HandleUnclosedThinkTags(message.Content)
  MarkdownContent->>MarkdownContent: RemoveEmbeddingsElement(message.Content)
  MarkdownContent->>MarkdownContent: Markdown.ToHtml(message.Content, markdownPipeline)
  MarkdownContent-->>Chats.razor: Returns HTML
  deactivate MarkdownContent
  Chats.razor->>Browser: Displays rendered HTML

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File-Level Changes

Change	Details	Files
Introduces a new MarkdownContent component for rendering Markdown content within the chat interface.	Created a MarkdownContent component that takes Markdown content as input and renders it as HTML. Utilized the Markdig library with extensions for advanced Markdown features like tables, auto-links, emojis, media links, citations, mathematics, and diagrams. Implemented code highlighting using the ColorCode library with support for multiple languages. Added logic to handle unclosed <think> tags and wrap them correctly. Added logic to remove [EMBEDDINGS] tags. Added a style for think tags.	src/BootstrapBlazor.Server/Components/Components/MarkdownContent.razor src/BootstrapBlazor.Server/Components/Pages/Chats.razor src/BootstrapBlazor.Server/Components/Samples/Markdowns.razor.cs
Updates the Chats page to use the new MarkdownContent component for displaying chat messages.	Replaced the direct display of message content with the MarkdownContent component. Passed the message content to the MarkdownContent component for rendering.	src/BootstrapBlazor.Server/Components/Pages/Chats.razor

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[bb-auto]

Thanks for your PR, @MadLongTom. Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[sourcery-ai]

Hey @MadLongTom - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider extracting the markdown pipeline configuration to a static field for reuse.
• The HandleUnclosedThinkTags method could be simplified by using a single Regex.Replace with a more complex pattern.

Here's what I looked at during the review

• 🟡 General issues: 3 issues found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (49a4da0) to head (53f4358).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #5653   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          657       657           
  Lines        29926     29926           
  Branches      4248      4248           
=========================================
  Hits         29926     29926           

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