[Feature] Use XDG_Picture_dir as fallback

lua/codesnap/static.lua

@@ -1,4 +1,15 @@
 local path_utils = require("codesnap.utils.path")
+-- Get user os
+-- If linux, use XDG_PICTURE_DIR, if mac use ~/Pictures, if windows use FOLDERID_Pictures (If support is added back)
+local default_save_path = nil
+local os_name = vim.loop.os_uname().sysname
+if os_name == "Linux" then
+  default_save_path = os.getenv("XDG_PICTURES_DIR") or (os.getenv("HOME") .. "/Pictures")
+elseif os_name == "Darwin" then
+  default_save_path = os.getenv("HOME") .. "/Pictures"
+else
+  error("codesnap.nvim only supports Linux and MacOS")
+end
 
 return {
   config = {
@@ -15,6 +26,7 @@ return {
     min_width = 0,
     bg_x_padding = 122,
     bg_y_padding = 82,
+    save_path = default_save_path,
   },
   cwd = path_utils.back(path_utils.back(debug.getinfo(1, "S").source:sub(2):match("(.*[/\\])"))),
   preview_switch = true,