neovim: add extended obsidian plugin module

outputs/pkgs/ook-vim/modules/plugins/gruvbox-material/config.nix

@@ -0,0 +1,80 @@
+{
+  config,
+  lib,
+  inputs,
+  pkgs,
+  ...
+}: let
+  inherit (lib) mkOption mkIf boolToString;
+  inherit (lib.types) bool enum lines;
+  inherit (lib.nvim.dag) entryAfter;
+
+  cfg = config.vim.gruvbox-material;
+in {
+  options.vim.gruvbox-material = {
+    enable = mkOption {
+      type = bool;
+      description = "Enable gruvbox-material-theme";
+      default = false;
+    };
+    contrast = mkOption {
+      type = enum ["dark" "medium" "soft"];
+      description = "Set contrast, can be any of 'hard', 'medium', 'soft'";
+      default = "dark";
+    };
+    italics = mkOption {
+      type = bool;
+      description = "Enable italic comments";
+      default = true;
+    };
+    transparent = mkOption {
+      type = bool;
+      description = "Set background to transparent";
+      default = false;
+    };
+    floatForceBackground = mkOption {
+      type = bool;
+      description = "Force backgrounds on floats even when transparent = true";
+      default = false;
+    };
+    signsHighlight = mkOption {
+      type = bool;
+      description = "Enable sign highlighting";
+      default = true;
+    };
+    extraConfig = mkOption {
+      type = lines;
+      description = "Additional lua configuration after";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    vim = {
+      startPlugins = [pkgs.vimPlugins.gruvbox-material-nvim];
+      luaConfigRC.theme =
+        entryAfter ["basic"]
+        /*
+        lua
+        */
+        ''
+          require('gruvbox-material').setup{
+            contrast = "${cfg.contrast}",
+            comments = {
+              italics = ${boolToString cfg.italics},
+            },
+            background = {
+              transparent = ${boolToString cfg.transparent},
+            },
+            float = {
+              force_background = ${boolToString cfg.floatForceBackground},
+              background_color = nil,
+            },
+            signs = {
+              highlight = ${boolToString cfg.signsHighlight},
+            },
+          }
+          ${cfg.extraConfig}
+        '';
+    };
+  };
+}