feat: add default tab settings

lua/config/options.lua

@@ -62,6 +62,18 @@ vim.opt.splitbelow = true
 vim.opt.list = true
 vim.opt.listchars = { tab = '» ', trail = '·', nbsp = '␣' }
 
+----
+-- Default tab settings
+----
+-- A TAB character looks like 4 spaces
+vim.o.tabstop = 4
+-- Pressing the TAB key will insert spaces instead of a TAB character
+vim.o.expandtab = true
+-- Number of spaces inserted instead of a TAB character
+vim.o.softtabstop = 4
+-- Number of spaces inserted when indenting
+vim.o.shiftwidth = 4
+
 -- Preview substitutions live, as you type!
 vim.opt.inccommand = 'split'