chore: prepare release 0.16.1

[dbanty]

This PR was created by Knope. Merging it will create a new release

Features

Add help_text option to workflows

[[workflows]] can now have help_text:

Example:

[[workflows]]
name = "release"
help_text = "Prepare a release"

The message is displayed when running knope --help:

A command line tool for automating common development tasks

Usage: knope [OPTIONS] [COMMAND]

Commands:
  release          Prepare a release
  help             Print this message or the help of the given subcommand(s)

...

PR #960 closes issue #959. Thanks @alex-way!

Use bullets to describe simple changes

The previous changelog & forge release format used headers for the summary of all changes, these entries were hard
to follow for simple changes like this:

### Features

#### A feature

#### Another header with no content in between?

Now, simple changes are described with bullets at the top of the section. More complex changes will come after
any bullets, using the previous format:

### Features

- A simple feature
- Another simple feature

#### A complex feature

Some details about that feature

Right now, a simple change is any change which comes from a conventional commit (whether from the commit summary or
from a footer) or a changeset with only a header in it. Here are three simple changes:

feat: A simple feature

Changelog-Note: A note entry

---
default: minor
---

# A simple feature with no description

A complex change is any changeset which has content (not just empty lines) below the header.

PR #969 implemented #930. Thanks for the suggestion @ematipico!

[netlify]

✅ Deploy Preview for knope ready!

Name	Link
🔨 Latest commit	be00335
🔍 Latest deploy log	https://app.netlify.com/sites/knope/deploys/66005f374afd460008e8b1bf
😎 Deploy Preview	https://deploy-preview-961--knope.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.