Packit: Enable scratch build testing for Fedora 36, 37 and Rawhide

This commit includes the initial addition of a .packit.yaml which will
run scratch builds for active Fedora releases which get the latest
Podman using Fedora's official packaging sources.

More packit integration to come in the future.

[NO NEW TESTS NEEDED]

Signed-off-by: Lokesh Mandvekar <lsm5@fedoraproject.org>

.packit.yaml

@@ -0,0 +1,18 @@
+# See the documentation for more information:
+# https://packit.dev/docs/configuration/
+
+upstream_package_name: podman
+downstream_package_name: podman
+
+actions:
+  post-upstream-clone:
+    - "curl -O https://src.fedoraproject.org/rpms/podman/raw/main/f/podman.spec"
+
+jobs:
+  - job: production_build
+    trigger: pull_request
+    targets: &production_dist_targets
+      - fedora-36
+      - fedora-37
+      - fedora-rawhide
+    scratch: true