(Calendar) add AdditionalHeaders Parameter #4673

[densen2014]

(Calendar) 日历组件, 周视图添加附加列, 显示例如时间刻度

Summary of the changes (Less than 80 chars)

周视图添加附加列

Description

fixes #4673

Regression?

• [ ] Yes
• [x] No

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

[是否影响老版本]

Risk

• [ ] High
• [ ] Medium
• [x] Low

[Justify the selection above]

Verification

• [x] 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

New Features:

• Introduce an AdditionalHeaders parameter to the Calendar component, allowing users to add custom headers in the week view.

[sourcery-ai[bot]]

Reviewer's Guide by Sourcery

This PR adds support for additional header columns in the Calendar component's week view. The implementation adds a new AdditionalHeaders parameter that accepts an array of strings, which are rendered as extra columns before the weekday headers.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Added support for additional header columns in the Calendar week view	Added new AdditionalHeaders parameter of type string[] Created RenderAddHeader RenderFragment to display additional header columns Modified week view table header to conditionally render additional columns Additional headers are displayed with responsive behavior (hidden on small screens)	src/BootstrapBlazor/Components/Calendar/Calendar.razor src/BootstrapBlazor/Components/Calendar/Calendar.razor.cs

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[bb-auto[bot]]

Thanks for your PR, @densen2014. Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 57.14286% with 6 lines in your changes missing coverage. Please review.

Project coverage is 99.97%. Comparing base (624ade0) to head (24c0dd3). Report is 21 commits behind head on main.

Files with missing lines	Patch %	Lines
...BootstrapBlazor/Components/Calendar/Calendar.razor	53.84%	5 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #4674 +/- ## =========================================== - Coverage 100.00% 99.97% -0.03% =========================================== Files 620 620 Lines 27428 27435 +7 Branches 3929 3931 +2 =========================================== + Hits 27428 27429 +1 - Misses 0 5 +5 - Partials 0 1 +1 ```

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