Add a Packit configuration for Fedora packaging (#1086)

* Add Packit configuration for Fedora packaging

 - all pull requests are build-tested in https://copr.fedorainfracloud.org
 - new releases will create pull requests in https://src.fedoraproject.org/rpms/httpie

Co-authored-by: Mickaël Schoentgen <contact@tiger-222.fr>

.gitignore

@@ -139,3 +139,8 @@ dmypy.json
 
 # Pyre type checker
 .pyre/
+
+# Packit
+/httpie.spec
+/httpie-*.rpm
+/httpie-*.tar.gz

.packit.yaml

@@ -0,0 +1,19 @@
+# See the documentation for more information:
+# https://packit.dev/docs/configuration/
+specfile_path: httpie.spec
+actions:
+  # the current Fedora Rawhide specfile has some patches
+  # so we get it from @hroncok's (= churchyard in Fedora) fork for now
+  # once we have a new release, we'll use: https://src.fedoraproject.org/rpms/httpie/raw/rawhide/f/httpie.spec
+  post-upstream-clone: "wget https://src.fedoraproject.org/fork/churchyard/rpms/httpie/raw/packit/f/httpie.spec -O httpie.spec"
+jobs:
+- job: copr_build
+  trigger: pull_request
+  metadata:
+    targets:
+    - fedora-all
+- job: propose_downstream
+  trigger: release
+  metadata:
+    dist_git_branches:
+    - rawhide