feat(sourcekit): update root_dir check for .bsp #4186

Mirrors: swiftlang/vscode-swift#1865

Author: ayroblu

lsp/sourcekit.lua

@@ -13,7 +13,7 @@ return {
   root_dir = function(bufnr, on_dir)
     local filename = vim.api.nvim_buf_get_name(bufnr)
     on_dir(
-      util.root_pattern 'buildServer.json'(filename)
+      util.root_pattern('buildServer.json', '.bsp')(filename)
         or util.root_pattern('*.xcodeproj', '*.xcworkspace')(filename)
         -- better to keep it at the end, because some modularized apps contain multiple Package.swift files
         or util.root_pattern('compile_commands.json', 'Package.swift')(filename)