Refactor JsonConfigParser with modular plugin architecture

[butschster]

PSR-3 Logger Implementation with Console Support

This PR adds a fully PSR-3 compliant logging system with console output support. The implementation is designed to integrate seamlessly with Symfony Console, respecting verbosity levels and providing colored output.

New Components:

• ConsoleLogger: PSR-3 compatible logger that outputs to Symfony Console
• LogLevel: Enum mapping PSR log levels to ANSI colors and verbosity settings
• FormatterInterface & SimpleFormatter: Message formatting and context interpolation
• NullLogger: No-op implementation for disabled logging scenarios
• LoggerFactory: Creates appropriate loggers based on runtime environment

Features:

• Verbosity-aware output: Respects console verbosity flags (-v, -vv, -vvv)
• Color-coded messages: Different log levels appear in distinct colors

Add Display Command for Configuration Visualization

Overview

This PR introduces a new display command that allows users to view their context configuration in a human-readable, color-coded format directly in the terminal. This makes it easier to debug configuration issues and understand complex configurations without having to open and parse JSON files manually.

ctx display [config-file]

This will show a detailed, color-highlighted breakdown of their configuration including all documents, sources, and modifiers.

Context: context.json
=====================

Total documents: 6


Document 1/6:
=====================

  Description: "Recent Git Changes"
  Output Path: "docs/recent-changes.md"
  Overwrite: true

    Text Source
    ===========
    Description: "Documentation Header"
    Tag: "description"
    Content Preview: ""# Recent Git Changes\n\nThis document contains recent changes from the git repository.\n""

    Git Diff Source
    ==============
    Description: "Recent Commits (Last 1)"
    Repository: "./."
    Commit Range: "unstaged"
    File Pattern: "*.*"
    Exclude Patterns: ["vendor", "tests"]
    Show Stats: true



Document 2/6:
=====================

  Description: "Sources."
  Output Path: "api/sources.md"
  Overwrite: true

    File Source
    ===========
    Source Paths: ["./test"]
    File Pattern: "*.php"
    Ignore Unreadable Dirs: false
    Show Tree View: true

    File Source
    ===========
    Source Paths: ["./src/Source", "./src/Lib/Content"]
    File Pattern: "*.php"
    Ignore Unreadable Dirs: false
    Show Tree View: true

    Modifiers: 1

    Modifier 1/10:
      Content Sanitizer Modifier
      --------------------------

      Options:
        Rules: [{
          "type": "keyword"
          "keywords": ["tet"]
        }]



Document 3/6:
=====================

  Description: "Modifiers"
  Output Path: "api/modifiers.md"
  Overwrite: true

    File Source
    ===========
    Source Paths: ["./src/Modifier", "./src/SourceModifierInterface.php"]
    File Pattern: "*.php"
    Ignore Unreadable Dirs: false
    Show Tree View: true

Refactor JsonConfigParser with modular plugin architecture

This PR refactors the JsonConfigParser into a more modular, extensible plugin-based architecture. The changes provide a foundation for handling diverse configuration needs through specialized plugins rather than a monolithic parser.

Benefits

• Extensibility: New configuration sections can be added without modifying existing code
• Separation of concerns: Each plugin handles a specific part of the configuration
• Type safety: Registry system provides type-safe access to configuration items