plugins: add zotcite and cmp-zotcite plugins

- Adds zotcite plugins (with completion).

Co-Authored-by: iGor milhit <igor@milhit.ch>

lua/plugins/markdown/zotcite.lua

@@ -0,0 +1,25 @@
+-- Install and configure zotcite
+--  https://github.com/jalvesaq/zotcite
+
+return {
+  "jalvesaq/zotcite",
+  dependencies = {
+    "nvim-treesitter/nvim-treesitter",
+    -- Add completion for zotcite
+    "jalvesaq/cmp-zotcite",
+  },
+  config = function ()
+    require("zotcite").setup({
+      -- waiting for zotcite options
+    })
+    require("cmp_zotcite").setup({
+      -- Add the pandoc filetype
+      filetypes = {
+        "pandoc",
+        "markdown",
+        "rmd",
+        "quarto",
+      }
+    })
+  end
+}

lua/plugins/nvim-cmp.lua

@@ -107,6 +107,7 @@ return {
         },
         { name = "path" },
         { name = "emoji" },
+        { name = "cmp_zotcite"} -- zotcite (plugins/markdown/zotcite.lua)
       }),
 
       formatting = {