ci: improve cliff.toml template and remove PR title workflow

Author: shamykyzer

.github/workflows/pr-title.yaml

@@ -2,15 +2,16 @@
 header = ""
 body = """
 {% if version %}\
-# acro {{ version | trim_start_matches(pat="V") }}
-
+# acro {{ version | trim_start_matches(pat="V") }} ({{ timestamp | date(format="%b %d, %Y") }})
 {% else %}\
 # Unreleased
-
 {% endif %}\
+{% for group, commits in commits | group_by(attribute="group") %}
+### {{ group }}
 {% for commit in commits -%}
-*   {% if commit.scope %}{{ commit.group }}({{ commit.scope }}): {% else %}{{ commit.group }}: {% endif %}{{ commit.message | trim }}
-{% endfor %}\
+*   {% if commit.scope %}**{{ commit.scope }}:** {% endif %}{{ commit.message | trim }}
+{% endfor %}
+{%- endfor %}\
 """
 trim = true
 footer = ""
@@ -29,16 +30,17 @@ commit_preprocessors = [
 commit_parsers = [
     { message = "^\\[pre-commit", skip = true },
     { message = "^docs: update changelog", skip = true },
+    { message = "^docs: update citation", skip = true },
     { message = "^chore: prepare", skip = true },
     { message = "^feat", group = "feat" },
     { message = "^fix", group = "fix" },
     { message = "^docs", group = "docs" },
-    { message = "^chore", group = "chore" },
-    { message = "^ci", group = "ci" },
+    { message = "^perf", group = "perf" },
     { message = "^refactor", group = "refactor" },
-    { message = "^test", group = "test" },
     { message = "^build", group = "build" },
-    { message = "^perf", group = "perf" },
+    { message = "^test", group = "test" },
+    { message = "^ci", group = "ci" },
     { message = "^style", group = "style" },
+    { message = "^chore", group = "chore" },
     { message = "^revert", group = "revert" },
 ]