feat: add git-cliff configuration

git-cliff is a tool which allows us to generate changelog
based off of conventional commits in the repository.

This commit provides an initial cliff.toml configuration
file which formats changelog output with tables and branch
state metadata.

Upstream: https://github.com/orhun/git-cliff

Signed-off-by: Kevin Morris <kevr@0cost.org>

cliff.toml

@@ -0,0 +1,75 @@
+# configuration file for git-cliff (0.1.0)
+
+[changelog]
+# changelog header
+header = """
+# Changelog
+All notable feature additions, bug fixes and changes to this project will be \
+documented in this file.\n
+"""
+# template for the changelog body
+# https://tera.netlify.app/docs/#introduction
+body = """
+{% if version %}\
+    #### Release [{{ version | trim_start_matches(pat="v") }}] - {{ timestamp | date(format="%Y-%m-%d") }}
+{% else %}\
+    {% set head = commits | last %}\
+    | Branch | HEAD | Status | Coverage |
+    |--------|------|--------|----------|
+    | [pu](https://gitlab.archlinux.org/archlinux/aurweb/-/tree/pu) | [{{ head.id | truncate(length=8, end="") }}](https://gitlab.archlinux.org/archlinux/aurweb/-/commits/{{ head.id }}) | ![pipeline](https://gitlab.archlinux.org/archlinux/aurweb/badges/pu/pipeline.svg?key_text=build) | ![coverage](https://gitlab.archlinux.org/archlinux/aurweb/badges/pu/coverage.svg) | 
+{% endif %}\
+{% for group, commits in commits | group_by(attribute="group") %}
+    ### {{ group | lower }}
+    | Commit | Message |
+    |--------|---------| \
+    {% for commit in commits %}
+        | [{{ commit.id | truncate(length=8, end="") }}](https://gitlab.archlinux.org/archlinux/aurweb/-/commit/{{ commit.id }}) | {{ commit.message }} |\
+    {% endfor %}
+{% endfor %}\n
+"""
+# remove the leading and trailing whitespaces from the template
+trim = true
+# changelog footer
+footer = """
+## Notes
+
+See a general project status overview at \
+https://gitlab.archlinux.org/archlinux/aurweb/-/wikis/Home.
+
+To contribute with testing of the modern aurweb FastAPI port development, visit \
+https://gitlab.archlinux.org/archlinux/aurweb/-/wikis/Testing-Guide.
+
+To file a bug, create an issue using the Bug template by following the link: \
+https://gitlab.archlinux.org/archlinux/aurweb/-/issues/new?issuable_template=Bug.
+
+To provide feedback, create an issue using the Feedback template by following
+the link: \
+https://gitlab.archlinux.org/archlinux/aurweb/-/issues/new?issuable_template=Feedback.
+
+<!-- generated by git-cliff -->
+"""
+
+[git]
+# allow only conventional commits
+# https://www.conventionalcommits.org
+conventional_commits = true
+# regex for parsing and grouping commits
+commit_parsers = [
+    { message = "^feat", group = "Features"},
+    { message = "^fix", group = "Bug Fixes"},
+    { message = "^doc", group = "Documentation"},
+    { message = "^perf", group = "Performance"},
+    { message = "^change", group = "Changes" },
+    { message = "^refactor", group = "Refactor"},
+    { message = "^style", group = "Styling"},
+    { message = "^test", group = "Testing"},
+    { message = "^chore\\(release\\): prepare for", skip = true},
+    { message = "^chore", group = "Miscellaneous Tasks"},
+    { body = ".*security", group = "Security"},
+]
+# filter out the commits that are not matched by commit parsers
+filter_commits = false
+# glob pattern for matching git tags
+tag_pattern = "v[0-9]*"
+# regex for skipping tags
+skip_tags = "v0.1.0-beta.1"