add option for fillchars

lua/core/default_config.lua

@@ -25,6 +25,7 @@ M.options = {
    timeoutlen = 400,
    updatetime = 250,
    undofile = true,
+   fillchars = { eob = " " },
 
    -- NvChad options
    nvChad = {

lua/core/options.lua

@@ -14,7 +14,7 @@ opt.shiftwidth = options.shiftwidth
 opt.smartindent = options.smartindent
 
 -- disable tilde on end of buffer: https://github.com/neovim/neovim/pull/8546#issuecomment-643643758
-opt.fillchars = { eob = " " }
+opt.fillchars =  options.fillchars 
 
 opt.hidden = options.hidden
 opt.ignorecase = options.ignorecase