docs: update documentation for v1.5.0 release

- Update README.md with improved structure and v1.5.0 changelog
  * Add comprehensive Makefile documentation (3 specialized files)
  * Expand health check system details
  * Improve Docker Compose section with profiles
  * Add security features section
  * Update all version references to 1.5.0
  * Fix component versions (PHP 8.4.13, Redis 7.2.11, Alpine 3.21)

- Update IMAGE_USAGE_GUIDE.md with corrections and improvements
  * Fix version references from 1.2.1 to 1.5.0
  * Remove references to supervisorctl (not used)
  * Document REDIS_HOST behavior (127.0.0.1 vs service name)
  * Add Redis troubleshooting section for standalone/compose modes
  * Expand Kubernetes section with HPA
  * Add Docker Swarm high availability examples
  * Improve troubleshooting section with practical solutions

- Update DOCKER_HUB.md for Docker Hub publication
  * Update to v1.5.0 with complete feature list
  * Add dev tag documentation
  * Remove non-existent 'stable' tag
  * Document three specialized Makefiles
  * Add comprehensive configuration examples
  * Expand security and testing sections
  * Include version history and changelog

- Remove DOCKER_HUB_OVERVIEW.md (consolidated into DOCKER_HUB.md)

These documentation updates prepare the project for the v1.5.0 release,
providing comprehensive guides for end users, developers, and maintainers.

Author: walmir-silva