feat: add commitizen

Signed-off-by: Matej Focko <mfocko@redhat.com>

.cz.toml

@@ -0,0 +1,7 @@
+[tool]
+[tool.commitizen]
+name = "cz_conventional_commits"
+tag_format = "$version"
+version_scheme = "semver"
+version_provider = "scm"
+update_changelog_on_bump = true

.pre-commit-config.yaml

@@ -1,10 +1,18 @@
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
 repos:
--   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.2.0
-    hooks:
-    -   id: trailing-whitespace
-    -   id: end-of-file-fixer
-    -   id: check-yaml
-    -   id: check-added-large-files
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v3.2.0
+  hooks:
+  - id: trailing-whitespace
+  - id: end-of-file-fixer
+  - id: check-yaml
+  - id: check-added-large-files
+
+- repo: https://github.com/commitizen-tools/commitizen
+  rev: v3.15.0
+  hooks:
+  - id: commitizen
+  - id: commitizen-branch
+    stages:
+    - push