feature: Enhance search command with tags and filter options

[ChristianLempa]

Description

Improve the search command to support querying by multiple criteria and applying filters.

Proposed Features

Search Query

• Search across multiple fields: ID, name, features, and tags
• Single search string matches any of these fields

Filter Flags

• --features / -f: Filter by features (comma-separated list)
  • Example: --features traefik,swarm
• --tags / -t: Filter by tags (comma-separated list)
  • Example: --tags webserver,proxy
• --schema: Filter by schema version (comma-separated)
  • Example: --schema 1.0,1.1
• --version: Filter by template version
• --library: Filter by library source (comma-separated)
  • Example: --library local,library2

Example Usage

# Search for templates with traefik feature in schema 1.1
boilerplates compose search nginx --features traefik --schema 1.1

# Search across all fields with multiple filters
boilerplates compose search web --features traefik,swarm --tags production --library default

Implementation Notes

• Filters should work as AND conditions (all must match)
• Comma-separated values within a filter work as OR (any can match)
• Search query matches against ID, name, features, or tags fields