Update to (somewhat?) dendritic pattern

Heavily inspired by https://github.com/Doc-Steve/dendritic-design-with-flake-parts.

> Atomic commits? Never heard of them!

modules/programs/nixvim/_nixvim-config/plugins/telescope/default.nix

@@ -0,0 +1,20 @@
+{ ... }: {
+  imports = [
+    ./keymaps.nix
+  ];
+  dependencies.ripgrep.enable = true;
+
+  plugins.telescope = {
+    enable = true;
+    extensions.file-browser = {
+      enable = true;
+      settings = {
+        git_status = true;
+        hijack_netrw = true;
+        respect_gitignore = true;
+        fzf-native.enable = true;
+        fzf-native.settings.case_mode = "ignore_case";
+      };
+    };
+  };
+}

modules/programs/nixvim/_nixvim-config/plugins/telescope/keymaps.nix

@@ -0,0 +1,24 @@
+{ ... }: {
+  keymaps = [
+    {
+      key = "<leader>sf";
+      action = "<cmd>Telescope find_files<CR>";
+      options.desc = "[S]earch [F]iles";
+    }
+    {
+      key = "<leader>sg";
+      action = "<cmd>Telescope live_grep<CR>";
+      options.desc = "[S]earch by [G]rep";
+    }
+    {
+      key = "<leader>sw";
+      action = "<cmd>Telescope grep_string<CR>";
+      options.desc = "[S]earch current [W]ord";
+    }
+    {
+      key = "<leader>q";
+      action = "<cmd>Telescope diagnostics<CR>";
+      options.desc = "Lsp Diagnostics";
+    }
+  ];
+}