Add completion, cli on nvim session and others functions

lua/plugins/completion.lua

@@ -0,0 +1,26 @@
+return {
+  "hrsh7th/nvim-cmp",
+  dependencies = {
+    "hrsh7th/cmp-nvim-lsp", -- Source LSP
+    "hrsh7th/cmp-buffer",   -- Source mots du buffer actuel
+    "hrsh7th/cmp-path",     -- Source chemins de fichiers
+    "L3MON4D3/LuaSnip",     -- Moteur de snippets
+  },
+  config = function()
+    local cmp = require("cmp")
+    cmp.setup({
+      mapping = cmp.mapping.preset.insert({
+        ['<C-b>'] = cmp.mapping.scroll_docs(-4),
+        ['<C-f>'] = cmp.mapping.scroll_docs(4),
+        ['<C-Space>'] = cmp.mapping.complete(),
+        ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Entrée pour valider
+        ['<Tab>'] = cmp.mapping.select_next_item(),        -- Tab pour descendre
+      }),
+      sources = cmp.config.sources({
+        { name = 'nvim-lsp' },
+        { name = 'buffer' },
+        { name = 'path' },
+      })
+    })
+  end
+}