Update lsp config

lua/plugins/config/cmp.lua

@@ -0,0 +1,24 @@
+local cmp = require("cmp")
+
+cmp.setup {
+    snippet = {
+        expand = function(args)
+            require("luasnip").lsp_expand(args.body)
+        end
+    },
+
+    mapping = cmp.mapping.preset.insert({
+        ["<C-b>"] = cmp.mapping.scroll_docs(-4),
+        ["<C-f>"] = cmp.mapping.scroll_docs(4),
+        ["<C-Space>"] = cmp.mapping.complete(),
+        ["<C-e>"] = cmp.mapping.abort(),
+        ["<CR>"] = cmp.mapping.confirm({ select = true })
+    }),
+
+    sources = cmp.config.sources({
+        { name = "nvim_lsp" },
+        { name = "luasnip" }
+    }, {
+        { name = "buffer" }
+    })
+}