feat: add plugins

Signed-off-by: d0zingcat <iamtangli42@gmail.com>

nvim/lua/plugins/cmp.lua

@@ -0,0 +1,34 @@
+-- cmp.lua - 自动补全配置
+return {
+  {
+    "hrsh7th/nvim-cmp",
+    dependencies = {
+      "hrsh7th/cmp-nvim-lsp",
+      "hrsh7th/cmp-buffer",
+      "hrsh7th/cmp-path",
+      "L3MON4D3/LuaSnip",
+      "saadparwaiz1/cmp_luasnip",
+    },
+    event = "InsertEnter",
+    opts = function()
+      local cmp = require("cmp")
+      return {
+        snippet = {
+          expand = function(args)
+            require("luasnip").lsp_expand(args.body)
+          end,
+        },
+        mapping = cmp.mapping.preset.insert({
+          ["<C-Space>"] = cmp.mapping.complete(),
+          ["<CR>"] = cmp.mapping.confirm({ select = true }),
+        }),
+        sources = cmp.config.sources({
+          { name = "nvim_lsp" },
+          { name = "luasnip" },
+          { name = "buffer" },
+          { name = "path" },
+        }),
+      }
+    end,
+  },
+}