Add .NET Foundation membership to homepage

[Copilot]

Dev Proxy is a .NET Foundation member project — customers have told us this builds trust. Adding visibility for it on the homepage.

Changes

• Added official .NET Foundation logo SVG to public/logos/ (from dotnet-foundation/swag)
• Added membership badge section to homepage between Quick Start Scenarios and Final CTA — clickable card linking to the project page on dotnetfoundation.org
• Uses existing section-reveal scroll animation, theme-aware CSS variables, responsive layout (flex-col → sm:flex-row)

Screenshot

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• telemetry.astro.build
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node node /home/REDACTED/work/dev-proxy-tools.github.io/dev-proxy-tools.github.io/node_modules/.bin/astro build (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add dotnet foundation membership to homepage</issue_title>
<issue_description>Dev Proxy is a member of the dotnet foundation we should publicise this on the homepage, we've had feedback from customers that our membership gives them trust that the project is well maintained and supported.

Dev Proxy on dotnet foundation: https://dotnetfoundation.org/projects/project-detail/dev-proxy</issue_description>

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

• Fixes Add dotnet foundation membership to homepage #10

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