Fix query_symbols changed to exact match

[dezza]

I could not find anything about the lsp spec suggesting to use fuzzy matching for this function. Opening this PR to discuss original intent.

Currently it breaks jumping to function in vim with :tag which is mapped to workspace/symbol in solargraph-lsp since all substring matches are also considered before the exact match. This is how it works in gopls as well.

Original issue: #44

[castwide]

I suspect that vim's :tag feature selects the first symbol from the array in the workspace/symbol response. Solargraph doesn't sort the results, so the first symbol is not necessarily the closest match. A better solution might be to sort the results; this will allow :tag to find the correct result while still allowing for fuzzy matching.

[dezza]

Thanks a lot for the suggestion and commit! Excuse my suggestions while I familiarize myself with the project. I thought it was easier to visualize with a pull request.