Tests - setup + basic tests for all scripts

[mickeyn]

Basic test data + initial test

[Copilot]

Pull Request Overview

This PR adds basic test data and initial test infrastructure for the metacpan-ingest project. It includes setup for testing with fake CPAN data, Docker Compose configuration for testing environment, and continuous integration improvements.

• Adds comprehensive test data including fake CPAN packages and coverage data for testing
• Implements initial setup test that validates all major indexing operations
• Introduces Docker Compose configuration for running tests with Elasticsearch

Reviewed Changes

Copilot reviewed 18 out of 52 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
wait-for-es.sh	Shell script to wait for Elasticsearch to be available before running tests
test_data/	Fake CPAN data files for testing including package metadata and coverage data
t/00_setup.t	Comprehensive setup test that validates indexing operations across all indices
metacpan_ingest.conf	Adds test configuration for fake CPAN directory
log4perl_test.conf	Test logging configuration
lib/MetaCPAN/Mapper.pm	Enhanced to support test mode and index creation with mappings
lib/MetaCPAN/Ingest.pm	Test environment detection and configuration improvements
lib/MetaCPAN/File.pm	Removed deprecated payload field from suggest configuration
lib/MetaCPAN/External/Debian.pm	Fixed ES constructor parameter
lib/MetaCPAN/ES.pm	Test mode support and ES constructor improvements
lib/MetaCPAN/Contributor.pm	ES instance management improvements
docker-compose.yml	Docker Compose configuration for test environment
README.md	Added build status badge
Dockerfile	Added test files to container
.github/workflows/build-container.yml	Updated to use Docker Compose for testing
.circleci/config.yml	CircleCI configuration for comprehensive testing

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