Add: Pacstall to downloads

[ajstrongdev]

---

name: Pull Request
about: Open a PR for this project

Requirements

• Filling out the template is required. Any pull request that does not include enough information to be reviewed in a timely manner may be closed at the maintainers' discretion.
• All new code requires tests to ensure against regressions.
  • However, if your PR contains zero code changes, such as in the event of a PR for Markdown files. Pulsar PR 109 allows for the use of [skip-ci], [skip-package-ci], or [skip-editor-ci] at the start of your PR title.
  • This only disables the workflows for the pull_request, the workflows will still run after merging.

Description of the Change

Adds Pacstall to the downloads under package managers for Linux.

Alternate Designs

Benefits

Possible Drawbacks

Applicable Issues