…r deprecation

selinux_troubleshoot.sh:
- Renamed from permissive_selinux.sh for better clarity
- Multiple commands: status, denials, suggest, permissive, enforcing
- Strong security warnings before disabling enforcement
- User confirmation required for permissive mode
- Temporary vs permanent mode options
- Show recent SELinux denials from audit log
- Analyze denials with audit2why and suggest fixes
- Configuration backup before changes
- Troubleshooting workflow guidance
- Common SELinux fixes documentation
- Alternative solutions instead of disabling
- Common library integration

etcbackup.sh:
- Simple wrapper around dirbackup.sh for /etc backups
- Optimized defaults for /etc (90-day retention)
- Passes all configuration to dirbackup.sh
- Leverages all dirbackup.sh features (encryption, verification, etc.)
- Automatic detection and execution of dirbackup.sh
- Common library integration

DEPRECATED_newuser.sh:
- Deprecation notice for nginx/newuser.sh
- Replaced by install_flask.sh which provides superior functionality
- Clear migration path documented
- Will be removed in future release

This commit deprecates all old script locations and provides clear
migration paths to the new modernized scripts.

Changes:
- Removed old scripts from original locations
- Created DEPRECATED_*.sh notices for all moved scripts
- Added README.md files in old directories explaining reorganization

Deprecated Locations:
- server_management/CentOS/*.sh → Moved to server_management/ or installation_scripts/
- server_management/Debian/*.sh → Moved to installation_scripts/
- miscellaneous/*.sh → Moved to utilities/ or installation_scripts/

Each DEPRECATED script provides:
- New location of the modernized script
- Summary of enhancements
- Migration examples
- Exit code 1 to prevent accidental usage

README files added:
- server_management/CentOS/README.md
- server_management/Debian/README.md
- miscellaneous/README.md

These provide directory-level migration guides with complete mapping tables.

Timeline: Deprecated scripts will be removed in a future release.
Users should update to new locations immediately.

…p-cleanup

Batch 3: SELinux troubleshooting, etcbackup wrapper, and cleanup
LGTM

…ipts

Cleanup: Deprecate and remove old script locations
LGTM

Modernize Python scripts (checkcpu.py and timer.py)
LGTM

Update README.md with complete script catalog, usage examples, and
accurate information about all modernized scripts. Add MIGRATION.md to
guide users from old script locations to new ones. Add EXAMPLES.md with
comprehensive usage examples for common workflows. Update CHANGELOG.md
with detailed 2.0.0 release notes documenting all changes.

Add comprehensive documentation
LGTM

Reduce verbosity in README, EXAMPLES, MIGRATION, and CHANGELOG.
Make documentation more concise and easier to scan.

- README: Remove excessive detail, convert tables to simpler formats
- EXAMPLES: Focus on practical examples, remove redundant explanations
- MIGRATION: Condense migration examples, remove obvious sections
- CHANGELOG: Group similar changes, reduce exhaustive listings