feat(IIconTheme): use FrozenDictionary improve performance

[ArgoZhang]

use FrozenDictionary improve performance

Summary of the changes (Less than 80 chars)

简单描述你更改了什么, 不超过80个字符；如果有关联 Issue 请在下方填写相关编号

Description

fixes #5007

Regression?

• Yes
• No

[If yes, specify the version the behavior has regressed from]

[是否影响老版本]

Risk

• High
• Medium
• Low

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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

Improve performance by using FrozenDictionary for icon themes in .NET 8 and later.

New Features:

• Introduce FontAwesomeIcons class to store icon theme mapping.

Enhancements:

• Use FrozenDictionary to store icon themes for improved performance.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request improves performance by using FrozenDictionary to store icon themes when running on .NET 8 or higher.

Class diagram showing IconTheme changes for .NET 8

classDiagram
    class IIconTheme {
        <<interface>>
        +GetIcons() Dictionary~ComponentIcons, string~
        +GetIcons() FrozenDictionary~ComponentIcons, string~
    }
    class DefaultIconTheme {
        -IOptions~IconThemeOptions~ _options
        +GetIcons() Dictionary~ComponentIcons, string~
        +GetIcons() FrozenDictionary~ComponentIcons, string~
    }
    class IconThemeOptions {
        +Icons Dictionary~string, Dictionary~ComponentIcons, string~~
        +Icons FrozenDictionary~string, FrozenDictionary~ComponentIcons, string~~
        +ThemeKey string
    }
    class FontAwesomeIcons {
        +Icons Dictionary~ComponentIcons, string~
        +ToFrozenDictionary() FrozenDictionary~ComponentIcons, string~
    }
    IIconTheme <|.. DefaultIconTheme
    DefaultIconTheme --> IconThemeOptions
    IconThemeOptions --> FontAwesomeIcons
    note for IconThemeOptions "Uses FrozenDictionary in .NET 8+"
    note for DefaultIconTheme "Implements both Dictionary and FrozenDictionary versions"

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State diagram showing IconTheme initialization flow

stateDiagram-v2
    [*] --> InitializeIconTheme
    InitializeIconTheme --> CheckDotNetVersion
    CheckDotNetVersion --> NET8: if .NET 8+
    CheckDotNetVersion --> OlderVersion: if < .NET 8
    NET8 --> CreateFrozenDictionary
    OlderVersion --> CreateRegularDictionary
    CreateFrozenDictionary --> [*]
    CreateRegularDictionary --> [*]
    note right of NET8: Uses FrozenDictionary for better performance
    note right of OlderVersion: Uses regular Dictionary

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File-Level Changes

Change	Details	Files
Replaced the usage of Dictionary with FrozenDictionary for storing icon themes.	Introduced preprocessor directives to conditionally use FrozenDictionary based on the .NET version. Updated the Icons property and related methods to use FrozenDictionary when available. Added a new FontAwesomeIcons class to store the default FontAwesome icons and provide a method to convert them to a FrozenDictionary.	src/BootstrapBlazor/Options/IconThemeOptions.cs src/BootstrapBlazor/Services/DefaultIconTheme.cs src/BootstrapBlazor/Services/IIconTheme.cs
Refactored the icon theme initialization logic.	Moved the FontAwesome icons definitions to a separate FontAwesomeIcons class. Simplified the IconThemeOptions constructor by using the FontAwesomeIcons class. Removed the explicit setting of the ThemeKey in the AddBootstrapBlazorServices method, relying on the default value set in the IconThemeOptions constructor.	src/BootstrapBlazor/Options/IconThemeOptions.cs src/BootstrapBlazor/Extensions/BootstrapBlazorServiceCollectionExtensions.cs src/BootstrapBlazor/Server/Extensions/ServiceCollectionSharedExtensions.cs
Added a new file for FontAwesome icons.	Created a new class FontAwesomeIcons to store the FontAwesome icon mappings. Provided a method ToFrozenDictionary to convert the icon dictionary to a FrozenDictionary when running on .NET 8 or higher.	src/BootstrapBlazor/Options/FontAwesomeIcons.cs

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#5007	Use FrozenDictionary to improve performance	✅

Possibly linked issues

• feat(IIconTheme): use FrozenDictionary improve performance #5007: The PR fixes the issue by using FrozenDictionary to improve performance.

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[sourcery-ai]

Hey @ArgoZhang - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟡 Complexity: 1 issue found
• 🟢 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 (9a215d2) to head (ba8899c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #5008   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          630       631    +1     
  Lines        27928     27938   +10     
  Branches      3996      3998    +2     
=========================================
+ Hits         27928     27938   +10     

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