add visibility handling for the floating window

lua/test-samurai/config.lua

@@ -1,6 +1,6 @@
 local M = {}
 
-M.defaults = {
+local defaults = {
   runner_modules = {
     "test-samurai.runners.go",
     "test-samurai.runners.js-jest",
@@ -9,18 +9,18 @@ M.defaults = {
   },
 }
 
-M.options = vim.deepcopy(M.defaults)
+local current = vim.deepcopy(defaults)
 
-function M.setup(opts)
-  if not opts or next(opts) == nil then
-    M.options = vim.deepcopy(M.defaults)
+function M.set(opts)
+  if type(opts) ~= "table" then
+    current = vim.deepcopy(defaults)
     return
   end
-  M.options = vim.tbl_deep_extend("force", M.defaults, opts)
+  current = vim.tbl_deep_extend("force", vim.deepcopy(defaults), opts)
 end
 
 function M.get()
-  return M.options
+  return current or defaults
 end
 
 return M