add tabstop rules to nvim

os_and_install/install_nvim.sh

@@ -51,6 +51,11 @@ vim.opt.clipboard = "unnamedplus"
 
 -- SSH + terminal copy compatibility
 vim.opt.mouse = ""
+-- tabstop
+vim.opt.tabstop = 4
+vim.opt.shiftwidth = 4
+vim.opt.softtabstop = 4
+vim.opt.expandtab = true
 
 -- optional
 vim.opt.relativenumber = true