neovim: add extended obsidian plugin module

outputs/pkgs/ook-vim/modules/plugins/obsidian/config.nix

@@ -0,0 +1,37 @@
+{
+  config,
+  lib,
+  options,
+  ...
+}: let
+  inherit (lib.modules) mkIf;
+  inherit (lib.nvim.dag) entryAnywhere;
+  inherit (lib.nvim.lua) toLuaObject;
+  inherit (lib.nvim.binds) mkKeymap pushDownDefault;
+  inherit (options.vim.notes.obsidianExtended) mappings;
+
+  cfg = config.vim.notes.obsidianExtended;
+  keys = cfg.mappings;
+in {
+  config = mkIf cfg.enable {
+    vim = {
+      startPlugins = [
+        "obsidian-nvim"
+        "vim-markdown"
+        "tabular"
+      ];
+
+      binds.whichKey.register = pushDownDefault {
+        "<leader>o" = "+Notes";
+      };
+
+      pluginRC.obsidian = entryAnywhere ''
+        require("obsidian").setup(${toLuaObject cfg.setupOpts})
+      '';
+      keymaps = [
+        (mkKeymap "n" keys.openNote "<cmd>ObsidianOpen<CR>" {desc = mappings.openNote.description;})
+        (mkKeymap "n" keys.findNote "<cmd>ObsidianQuickSwitch<CR>" {desc = mappings.findNote.description;})
+      ];
+    };
+  };
+}