feat(file_selector): support customized filepaths resolver (#1294)

README.md

@@ -417,6 +417,24 @@ To create a customized file_selector, you can specify a customized function to l
             end
           })
         end,
+        ---below is optional
+        provider_opts = {
+          ---@param params avante.file_selector.opts.IGetFilepathsParams
+          get_filepaths = function(params)
+            local cwd = params.cwd ---@type string
+            local selected_filepaths = params.selected_filepaths ---@type string[]
+            local cmd = string.format("fd --base-directory '%s' --hidden", vim.fn.fnameescape(cwd))
+            local output = vim.fn.system(cmd)
+            local filepaths = vim.split(output, "\n", { trimempty = true })
+            return vim
+              .iter(filepaths)
+              :filter(function(filepath)
+                return not vim.tbl_contains(selected_filepaths, filepath)
+              end)
+              :totable()
+          end
+        }
+        end
       }
 ```