Filter release artifacts to only include installer files

[Copilot]

Problem

GitHub releases were including all .exe files from the dist/ folder, which resulted in unnecessary files being uploaded:

• PicoGraph.exe (unpacked executable - 177 MB)
• elevate.exe (build helper tool - 107 KB)
• PicoGraph.Setup.*.exe (the actual installer - needed ✓)
• PicoGraph.Setup.*.exe.blockmap (installer metadata - needed ✓)

This cluttered releases with files users don't need and increased download sizes.

Solution

Updated the workflow file patterns to be more specific:

• Changed dist/**/*.exe → dist/*Setup*.exe
• Changed dist/**/*.blockmap → dist/*Setup*.exe.blockmap

This filters the uploaded files to only include the NSIS installer and its blockmap file, which are the only artifacts end users need to download and install the application.

Impact

Future releases will only contain the installer files, reducing confusion for users and eliminating ~177 MB of unnecessary files from each release.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Remove non installer files from the release </issue_title>
<issue_description></issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #2

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[Copilot]

Pull Request Overview

This PR narrows the GitHub Actions upload globs to ensure Windows releases only include the NSIS installer and its blockmap, eliminating unnecessary .exe uploads.

• Replace broad dist/**/*.exe with dist/Setup.exe
• Replace broad dist/**/*.blockmap with dist/Setup.exe.blockmap

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