modules: start breaking down core modules; simplify tree structure

modules/plugins/notes/obsidian/config.nix

@@ -0,0 +1,43 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  inherit (lib) mkIf nvim;
+
+  cfg = config.vim.notes.obsidian;
+  auto = config.vim.autocomplete;
+in {
+  config = mkIf (cfg.enable) {
+    vim.startPlugins = [
+      "obsidian-nvim"
+      "vim-markdown"
+      "tabular"
+    ];
+
+    vim.luaConfigRC.obsidian = nvim.dag.entryAnywhere ''
+      require("obsidian").setup({
+        dir = "${cfg.dir}",
+        completion = {
+          nvim_cmp = ${
+        if (auto.type == "nvim-cmp")
+        then "true"
+        else "false"
+      }
+        },
+        daily_notes = {
+          folder = ${
+        if (cfg.daily-notes.folder == "")
+        then "nil,"
+        else "'${cfg.daily-notes.folder}',"
+      }
+          date_format = ${
+        if (cfg.daily-notes.date-format == "")
+        then "nil,"
+        else "'${cfg.daily-notes.date-format}',"
+      }
+        }
+      })
+    '';
+  };
+}