Add initial iteration of automation for release pull requests

[nerrad]

Attached to: #6

To help aid with the release process of WooCommerce blocks, we've been doing something called a "release pull request" that has the following basic steps (not exhaustive, just those related to this automation):

• create a branch release/x.x.x where x.x.x is the version being released. This branch is based off of main and is used to build the release.
• generate a changelog and commit to the branch.
• create a pull request using a standard template for these type of releases.
• follow a set of release steps for the release (in other docs).

As a part of #6, we want to automate as much of this process as possible. This pull request implements the first iteration of a new automation for releases. In this first iteration:

• The automation reacts to new created branches.
• It will create a pull request based on a template found in a project's .github folder.
• It will generate a changelog and add it to the description of the pull request template given the placeholder provided by the template.
• It will generate a release checklist as a comment on the pull request using a template provided in the project's .github folder.

This initial iteration is fairly basic but lays the groundwork for more automations around the release in future iterations.

There are some automated tests for the new automation but complete testing will need this merged to master to verify things are working as expected.

[github-actions]

Handle re-attempting creation of changelog after resolvin...

Handle re-attempting creation of changelog after resolving error.

---

automations/lib/automations/release/branch-create-handler.js

Lines 109 to 120 in e7da543

	// @todo Handle re-attempting creation of changelog after resolving error.
	//
	// Currently, the changelog error is a consistent error message string
	// so that future pushes where the pull already exists can optionally retry.
	changelog =
	`Changelog Error: ${ e.message }` +
	'\n' +
	"You'll need to edit this section manually";
	devNoteItems =
	`Devnotes Error: ${ e.message }` +
	'\n' +
	"PRs tagged for dev notes cannot be found, you'll need to edit this section manually.";

🚀 This comment was generated by the automations bot based on a todo comment in e7da543 in #11. cc @nerrad

[github-actions]

➿ Code coverage

Filename	Statements	Branches	Functions	Lines
lib/automations/todos/utils/get-todos.js	100%	100%	100%	100%
lib/automations/todos/utils/get-diff.js	100%	100%	100%	100%
lib/automations/todos/utils/parse-to-do.js	100%	97.67%	100%	100%
lib/automations/todos/utils/get-details.js	100%	90.91%	100%	100%
lib/debug.js	66.67%	50%	100%	66.67%
lib/automations/todos/utils/check-for-duplicate-issue.js	100%	100%	100%	100%
lib/automations/todos/index.js	100%	100%	100%	100%
lib/automations/todos/runner.js	88.89%	66.67%	100%	88.89%
lib/automations/todos/pull-request-handler.js	90.48%	83.33%	100%	90.48%
lib/automations/todos/templates/index.js	100%	100%	100%	100%
lib/automations/todos/templates/comment.js	100%	100%	100%	100%
lib/automations/todos/templates/issue.js	100%	100%	100%	100%
lib/automations/todos/templates/issue-from-merge.js	100%	100%	100%	100%
lib/automations/todos/templates/title-change.js	100%	100%	100%	100%
lib/automations/todos/templates/reopen-closed.js	100%	100%	100%	100%
lib/utils/index.js	100%	100%	100%	100%
lib/utils/milestones.js	100%	100%	100%	100%
lib/utils/helpers.js	85.71%	66.67%	100%	83.33%
lib/automations/todos/pull-request-merge-handler.js	91.3%	87.5%	100%	91.3%
lib/automations/todos/utils/reopen-closed.js	100%	100%	100%	100%
lib/automations/todos/push-handler.js	92%	90%	100%	92%
lib/automations/todos/issue-rename-handler.js	100%	100%	100%	100%
lib/automations/release/index.js	100%	100%	100%	100%
lib/automations/release/runner.js	86.67%	50%	100%	86.67%
lib/automations/release/branch-create-handler.js	86.79%	69.23%	66.67%	88.46%
lib/automations/release/templates/index.js	82.14%	42.86%	75%	82.14%
lib/automations/release/utils/index.js	100%	100%	100%	100%
lib/automations/release/utils/get-release-version.js	90.91%	87.5%	100%	90.91%
lib/automations/release/utils/is-patch-release.js	100%	100%	100%	100%
lib/automations/release/utils/get-release-branch.js	100%	100%	100%	100%
lib/automations/release/utils/duplicate-pr-checker.js	100%	100%	100%	100%
lib/automations/release/utils/has-milestone.js	100%	100%	100%	100%
lib/utils/changelog/index.js	100%	100%	100%	100%
lib/utils/changelog/common/changelog.js	83.51%	56.76%	86.49%	82.42%
lib/automations/release/config/index.js	78.57%	0%	100%	78.57%
lib/automations/release/config/validate-config.js	92.31%	88.89%	100%	92.31%
lib/utils/version.js	0%	0%	0%	0%
lib/typedefs.js	0%	100%	100%	0%
lib/if-not-fork.js	0%	0%	0%	0%
lib/index.js	0%	0%	0%	0%
lib/automations.js	0%	100%	100%	0%