Document Display pane xrandr dependencies in requirements

[Copilot]

The repo needed to enumerate all new dependencies introduced by the gershwin-components Display pane (notably xrandr) in the requirements directory.

• Requirements (Debian/Ubuntu): Added requirements/debian.txt listing libxrandr-dev and x11-xserver-utils.
• Requirements (FreeBSD): Added requirements/freebsd.txt listing libXrandr and xrandr.

Example:

# requirements/debian.txt
libxrandr-dev
x11-xserver-utils

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:

• https://api.github.com/repos/gershwin-desktop/gershwin-components/contents
  • Triggering command: /usr/bin/curl curl -L REDACTED (http block)
• https://api.github.com/repos/gershwin-desktop/gershwin-desktop/contents/requirements
  • Triggering command: /usr/bin/curl curl -L REDACTED (http 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

Add all new dependencie introduced by https://github.com/gershwin-desktop/gershwin-components/tree/main/Display to requirements/ (eg., xrandr dev package)

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