feat: add C implementation for `stats/base/dists/cauchy/entropy` #5160

	#/
	# @license Apache-2.0
	#
	# Copyright (c) 2024 The Stdlib Authors.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	#/

	# Workflow name:
	name: do_not_merge

	# Workflow triggers:
	on:
	pull_request:
	types:
	- synchronize
	- opened
	- reopened
	- labeled
	- unlabeled

	# Workflow jobs:
	jobs:

	# Define a job which fails a pull request if the pull request has a "Do Not Merge" label:
	do_not_merge:

	# Define job name:
	name: 'Check for Do Not Merge label'

	# Only run this job if the pull request has a "Do Not Merge" label:
	if: ${{ contains(github.event..labels..name, 'Do Not Merge') }}

	# Define job permissions:
	permissions:
	contents: read
	pull-requests: write

	# Define the type of virtual host machine:
	runs-on: ubuntu-latest

	# Define the sequence of job steps:
	steps:

	# Fail the pull request:
	- name: 'Prevent merge'
	run: \|
	echo "Pull request is labeled as 'Do Not Merge'."
	echo "This workflow fails so that the pull request cannot be merged."
	exit 1

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