feat(gallery): add fuzzy search

[mudler]

Description

This pull request improves the search functionality in the gallery module by introducing fuzzy matching, making searches more flexible and user-friendly. The main change is the replacement of simple substring matching with fuzzy matching for several fields, along with the addition of a new dependency.

Search functionality enhancement:

• Replaced strings.Contains with fuzzy.Match for matching the search term against model name, description, and gallery name in the Search method of GalleryElements in core/gallery/gallery.go. This allows for more flexible and tolerant search results.

Dependency management:

• Added the github.com/lithammer/fuzzysearch package as an indirect dependency in go.mod to support fuzzy matching in search.
• Imported the fuzzy package from github.com/lithammer/fuzzysearch/fuzzy in core/gallery/gallery.go to enable fuzzy search functionality.

Notes for Reviewers

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