📝 README: migrate README from rst to adoc

Replaces the legacy reStructuredText README with an AsciiDoc version.
This aligns the repository documentation with current Fedora Docs
standards and improves rendering on the forge instance.

Content has been ported over with appropriate syntax changes for lists,
links, and bold text regarding ticket triage and sprint planning.

Signed-off-by: Justin Wheeler <jwheel@redhat.com>

README.adoc

@@ -0,0 +1,38 @@
+= Fedora Infrastructure
+
+Welcome!
+This is the Fedora Infrastructure project.
+This project is mainly used as ticket tracker for Fedora Infrastructure.
+
+See how tickets are https://docs.fedoraproject.org/en-US/infra/day_to_day_fedora/[processed by Fedora Infrastructure Team].
+
+The git repo of this project used to contain some scripts and content from before our Ansible repo was public.
+The content is still in git history for historical needs.
+
+If you are looking for the Fedora Infrastructure Ansible repo, that is not here.
+Look here:
+
+https://pagure.io/fedora-infra/ansible.git
+
+If you would like to help out with Fedora Infrastructure, see:
+
+* https://fedoraproject.org/wiki/Infrastructure/GettingStarted
+* https://fedoraproject.org/wiki/Infrastructure_Apprentice
+
+Incoming tickets are triaged daily Monday through Thursday on matrix.
+Triaged tickets will have appropriate labels set from https://forge.fedoraproject.org/org/infra/settings/labels
+
+At least:
+
+* *Points*:
+  01, 03, 05, 08, 13
+* *Priority*:
+  high, medium, low
+
+Larger tickets are then planned into a 2-week sprint available at:
+
+https://forge.fedoraproject.org/infra/tickets/projects
+
+There will always be a current sprint and a next sprint, with older ones closed.
+
+Smaller day to day tickets will have the 'day-to-day' label applied and added to the current sprint backlog.