feat: Add type and module reorganization for Services, Modes, Meta and Filter Plugins

Co-authored-by: aider (openai/andrew/openrouter/sonoma-sky-alpha) <aider@aider.chat>

README.md

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+# Keep - Temporary File Management with Compression and Metadata
+
+Keep is a command-line tool for managing temporary files with automatic compression, metadata generation, and querying capabilities. It supports various compression algorithms and metadata plugins for rich item inspection.
+
+## Features
+
+- **Store and Retrieve**: Save content with automatic compression and retrieve by ID or tags.
+- **Compression Support**: Built-in support for LZ4, GZip, and more via external programs (BZip2, XZ, ZStd).
+- **Metadata Plugins**: Automatic extraction of file type, digests, hostname, user info, and custom metadata.
+- **Filtering**: Apply filters (head, tail, grep, etc.) when retrieving content.
+- **Querying**: List, search, and diff items with flexible formatting.
+- **REST API Server**: Optional HTTP server for programmatic access.
+- **Modular Design**: Extensible via plugins for compression, metadata, and filtering.
+
+## Installation
+