add git signs plugin

lua/weeheavy/plugins/gitsigns.lua

@@ -0,0 +1,38 @@
+-- Adds git related signs to the gutter, as well as utilities for managing changes
+return {
+'lewis6991/gitsigns.nvim',
+opts = {
+        -- See `:help gitsigns.txt`
+        signs = {
+                add = { text = '+' },
+                change = { text = '~' },
+                delete = { text = '_' },
+                topdelete = { text = '‾' },
+                changedelete = { text = '~' },
+        },
+        on_attach = function(bufnr)
+                vim.keymap.set('n', '<leader>hp', require('gitsigns').preview_hunk, { buffer = bufnr, desc = 'Preview git hunk' })
+
+                -- don't override the built-in and fugitive keymaps
+                local gs = package.loaded.gitsigns
+                vim.keymap.set({ 'n', 'v' }, ']c', function()
+                        if vim.wo.diff then
+                                return ']c'
+                        end
+                        vim.schedule(function()
+                                gs.next_hunk()
+                        end)
+                        return '<Ignore>'
+                end, { expr = true, buffer = bufnr, desc = 'Jump to next hunk' })
+                vim.keymap.set({ 'n', 'v' }, '[c', function()
+                        if vim.wo.diff then
+                                return '[c'
+                        end
+                        vim.schedule(function()
+                                gs.prev_hunk()
+                        end)
+                        return '<Ignore>'
+                end, { expr = true, buffer = bufnr, desc = 'Jump to previous hunk' })
+        end,
+},
+}