feat: Add Beszel Agent

[Justinzobel]

Closes #1447

[GideonBear]

Looks like you updated README.md;

https://github.com/wimpysworld/deb-get/blob/main/01-main/CONTRIBUTING.md#creating-the-package-definition-file

When submitting a PR, do not manually update README.md. It will be updated by the maintainers.

[Justinzobel]

Oops, let me fix that.

[Justinzobel]

Done.

[GideonBear]

You're missing definitions of URL and VERSION_PUBLISHED here. You can see that this doesn't work by copying this file to /etc/deb-get/99.local.d/beszel-agent and running deb-get install beszel-agent:

$ deb-get install beszel-agent
  [+] Including local package beszel-agent
  [!] Please consider contributing back new entries, an issue (or raise a PR) directly at https://github.com/wimpysworld/deb-get/pulls
  [+] Updating /var/cache/deb-get/beszel-agent.json_extract
  [!] ERROR! Missing required information of github package beszel-agent:
URL=
VERSION_PUBLISHED=

See this PR for an example. You'll have to adjust it to the naming scheme of the .deb files of beszel-agents GitHub releases.

[philclifford]

This is incomplete, as noted by @GideonBear

[Justinzobel]

It took me a bit to get back to this but I have done what is needed I think.

[Justinzobel]

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