add logo. license and better description/link

[ErikEJ]

No description provided.

[Copilot]

Pull Request Overview

This PR adds branding elements and improved metadata to the SQL Database Project Power Tools Visual Studio extension, including a logo, license information, and a more descriptive description with GitHub link.

• Updates extension description from generic text to detailed feature overview
• Replaces old Icon.png with new logo files (logo.png and logo9090.png)
• Adds license.txt file and MoreInfo URL pointing to GitHub repository

Reviewed Changes

Copilot reviewed 4 out of 11 changed files in this pull request and generated 1 comment.

File	Description
src/Vsix/source.extension.vsixmanifest	Updates VSIX manifest with new description, logo references, license, and GitHub URL
src/Vsix/source.extension.cs	Updates description constant to match manifest changes
src/Vsix/Vsix.csproj	Adds new logo and license files to project, removes old Icon.png reference
src/Vsix/Resources/license.txt	Adds license file with GitHub reference

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