chore(editorconfig): update encoding config

[ArgoZhang]

Link issues

fixes #804

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

Chores:

• Adjust .editorconfig to refine project-wide encoding configuration.

[sourcery-ai]

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[Copilot]

Pull request overview

This PR significantly simplifies the .editorconfig file by removing extensive C# and .NET coding style rules while retaining essential formatting configurations. The change reduces the file from 248 lines to 23 lines, keeping only core settings related to encoding, indentation, and file headers. This aligns with a more minimal configuration approach where many style rules can be handled by IDE defaults or other tooling.

Key Changes:

• Removed ~220 lines of detailed C# and .NET coding conventions, style preferences, and ReSharper-specific settings
• Consolidated file type patterns for XML, JSON, and project files into a single configuration block
• Updated the file header template to remove the https://argozhang.github.io/ URL reference

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[Copilot]

The file header template has been updated to remove the reference to https://argozhang.github.io/ at the end. This appears to be an intentional simplification, but if this URL is still actively used as an alternative website reference, it should be retained in the template. Please verify if removing this URL reference is intentional.

Suggested change

	file_header_template = Copyright (c) BootstrapBlazor & Argo Zhang (argo@live.ca). All rights reserved.\nLicensed under the Apache License, Version 2.0. See License.txt in the project root for license information.\nWebsite: https://www.blazor.zone
	file_header_template = Copyright (c) BootstrapBlazor & Argo Zhang (argo@live.ca). All rights reserved.\nLicensed under the Apache License, Version 2.0. See License.txt in the project root for license information.\nWebsite: https://www.blazor.zone https://argozhang.github.io/