fix: resolve dependency matching bug in add command

[aryan0931]

fixes: #3026

Enhances the error message in pixi add when no package candidates are found for a specified dependency (e.g., pixi add bla). Instead of a generic "No candidates were found" error, it now suggests up to 3 similar package names using the strsim::jaro similarity algorithm (threshold 0.6), reused from pixi/crates/pixi_manifest/src/error.rs (lines 286–304), and adds a tip: "Tip: Run pixi search to explore available packages." The solution modifies pixi/src/cli/add.rs to fetch repodata, compute suggestions, and print the improved message, while adding a CLI test in pixi/tests/cli/add.rs to verify the output. Dependencies (strsim, itertools) are ensured in pixi/Cargo.toml. Changes are kept minimal per mentor guidance, avoiding version inclusion (e.g., blaz (1.2.3)) and new modules.

[baszalmstra]

This doesnt seem ready yet, it seems to target an much older version of pixi. Im marking this as a draft for the time being. When ready feel free to undraft an request a review.

[aryan0931]

This doesnt seem ready yet, it seems to target an much older version of pixi. Im marking this as a draft for the time being. When ready feel free to undraft an request a review.

I am working on it will raise a new pr with updated changes.

[ruben-arts]

Closing this PR as stale