extensions:fugitive: add repo name

Signed-off-by: Timon van der Berg <tmnvanderberg@gmail.com>

lua/lualine/extensions/fugitive.lua

@@ -7,8 +7,16 @@ local function fugitive_branch()
   return icon .. ' ' .. vim.fn.FugitiveHead()
 end
 
+local function get_git_toplevel_basename()
+  local handle = io.popen("basename `git rev-parse --show-toplevel`")
+  local result = handle:read("*a")
+  handle:close()
+  return result:match("^%s*(.-)%s*$") -- trim any whitespace
+end
+
 M.sections = {
-  lualine_a = { fugitive_branch },
+  lualine_a = { get_git_toplevel_basename },
+  lualine_b = { fugitive_branch },
   lualine_z = { 'location' },
 }