feat(nvim): add gitsigns plugin

config/nvim/lua/plugins/gitsigns.lua

@@ -0,0 +1,35 @@
+return {
+  "lewis6991/gitsigns.nvim",
+  event = "LazyFile",
+  opts = {
+    signs = {
+      add = { text = "▎" },
+      change = { text = "▎" },
+      delete = { text = "" },
+      topdelete = { text = "" },
+      changedelete = { text = "▎" },
+      untracked = { text = "▎" },
+    },
+    on_attach = function(buffer)
+      local gs = package.loaded.gitsigns
+
+      local function map(mode, l, r, desc)
+        vim.keymap.set(mode, l, r, { buffer = buffer, desc = desc })
+      end
+
+      -- stylua: ignore start
+      map("n", "]h", gs.next_hunk, "Next Hunk")
+      map("n", "[h", gs.prev_hunk, "Prev Hunk")
+      map({ "n", "v" }, "<leader>ghs", ":Gitsigns stage_hunk<CR>", "Stage Hunk")
+      map({ "n", "v" }, "<leader>ghr", ":Gitsigns reset_hunk<CR>", "Reset Hunk")
+      map("n", "<leader>ghS", gs.stage_buffer, "Stage Buffer")
+      map("n", "<leader>ghu", gs.undo_stage_hunk, "Undo Stage Hunk")
+      map("n", "<leader>ghR", gs.reset_buffer, "Reset Buffer")
+      map("n", "<leader>ghp", gs.preview_hunk, "Preview Hunk")
+      map("n", "<leader>ghb", function() gs.blame_line({ full = true }) end, "Blame Line")
+      map("n", "<leader>ghd", gs.diffthis, "Diff This")
+      map("n", "<leader>ghD", function() gs.diffthis("~") end, "Diff This ~")
+      map({ "o", "x" }, "ih", ":<C-U>Gitsigns select_hunk<CR>", "GitSigns Select Hunk")
+    end,
+  },
+}