This PR adds support for HTML <a> anchor tags in RazorConsole, enabling developers to create clickable hyperlinks in their console applications using familiar HTML syntax.

What's New

RazorConsole now supports the <a> tag with href attributes, which are automatically converted to Spectre.Console's link markup format. Links will be clickable in modern terminals that support hyperlinks (Windows Terminal, iTerm2, GNOME Terminal, etc.).

Basic Usage

<p>Visit <a href="https://example.com">example.com</a> for more info.</p>

Advanced Features

Multiple links in text:

<p>Check out <a href="https://github.com">GitHub</a> or <a href="https://microsoft.com">Microsoft</a></p>

Links with nested formatting:

<a href="https://example.com"><strong>Bold Link</strong></a>
<a href="https://example.com"><em>Italic Link</em></a>

Automatic fallback:

<a>Text without href renders as plain text</a>

Implementation Details

Changes Made

1. Extended HtmlInlineTextElementTranslator: Added support for <a> tags alongside existing inline elements like <strong>, <em>, and <code>. URLs are automatically escaped for safety, and nested formatting is fully supported.

2. Fixed ParagraphElementTranslator: Updated to handle mixed content (text + inline elements) instead of text-only content. This allows <p> tags to contain anchor links and other inline formatting elements, making the paragraph translator more robust and consistent with HTML semantics.

Testing

• Added 5 comprehensive unit tests covering various anchor tag scenarios
• All existing 64 tests continue to pass
• Tested on both .NET 8.0 and .NET 9.0
• Verified with live demo application

Breaking Changes

None. This is a purely additive feature that extends existing functionality without modifying any public APIs or breaking existing behavior.

Fixes #52

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