fix(nvim): gitsigns config use defaults

This fixes the warnings about deprecated config symbols.

nvim/lua/gitsigns-config.lua

@@ -1,41 +1 @@
-require('gitsigns').setup({
-  signs = {
-    add          = {hl = 'GitSignsAdd'   , text = '│', numhl='GitSignsAddNr'   , linehl='GitSignsAddLn'},
-    change       = {hl = 'GitSignsChange', text = '│', numhl='GitSignsChangeNr', linehl='GitSignsChangeLn'},
-    delete       = {hl = 'GitSignsDelete', text = '_', numhl='GitSignsDeleteNr', linehl='GitSignsDeleteLn'},
-    topdelete    = {hl = 'GitSignsDelete', text = '‾', numhl='GitSignsDeleteNr', linehl='GitSignsDeleteLn'},
-    changedelete = {hl = 'GitSignsChange', text = '~', numhl='GitSignsChangeNr', linehl='GitSignsChangeLn'},
-  },
-  signcolumn = true,  -- Toggle with `:Gitsigns toggle_signs`
-  numhl      = false, -- Toggle with `:Gitsigns toggle_numhl`
-  linehl     = false, -- Toggle with `:Gitsigns toggle_linehl`
-  word_diff  = false, -- Toggle with `:Gitsigns toggle_word_diff`
-  watch_gitdir = {
-    interval = 1000,
-    follow_files = true
-  },
-  attach_to_untracked = true,
-  current_line_blame = false, -- Toggle with `:Gitsigns toggle_current_line_blame`
-  current_line_blame_opts = {
-    virt_text = true,
-    virt_text_pos = 'eol', -- 'eol' | 'overlay' | 'right_align'
-    delay = 1000,
-    ignore_whitespace = false,
-  },
-  current_line_blame_formatter = '<author>, <author_time:%Y-%m-%d> - <summary>',
-  sign_priority = 6,
-  update_debounce = 100,
-  status_formatter = nil, -- Use default
-  max_file_length = 40000, -- Disable if file is longer than this (in lines)
-  preview_config = {
-    -- Options passed to nvim_open_win
-    border = 'single',
-    style = 'minimal',
-    relative = 'cursor',
-    row = 0,
-    col = 1
-  },
-  yadm = {
-    enable = false
-  },
-})
+require('gitsigns').setup()