plugins: add zotcite and cmp-zotcite plugins

- Adds zotcite plugins (with completion).

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

lua/core/init.lua

@@ -1,3 +1,4 @@
 -- Load all module files
+require("core.python-provider")
 require("core.keymaps")
 require("core.options")

lua/core/python-provider.lua

@@ -0,0 +1,4 @@
+-- Set a virtualenv as python provider
+--  https://neovim.io/doc/user/provider.html#python-virtualenv
+
+vim.g.python3_host_prog = "/home/igor/.pyenv/versions/py-nvim3.10/bin/python"

lua/plugins/markdown/zotcite.lua

@@ -0,0 +1,23 @@
+-- Install and configure zotcite
+--  https://github.com/jalvesaq/zotcite
+
+return {
+  "jalvesaq/zotcite",
+  dependencies = {
+    "nvim-treesitter/nvim-treesitter",
+    "jalvesaq/cmp-zotcite",
+  },
+  config = function ()
+    require("zotcite").setup({
+      -- waiting for zotcite options
+    })
+    require("cmp_zotcite").setup({
+      filetypes = {
+        "pandoc",
+        "markdown",
+        "rmd",
+        "quarto",
+      }
+    })
+  end
+}

lua/plugins/nvim-cmp.lua

@@ -107,6 +107,7 @@ return {
         },
         { name = "path" },
         { name = "emoji" },
+        { name = "cmp_zotcite"}
       }),
 
       formatting = {