feat: styling updates (#10)

Updated some plugins to use custom git and diagnostic symbols, also
changed the line number color to match my system highlight color
(catppuccin peach).

README.md

@@ -1,6 +1,6 @@
 # NixVim Configuration
 
-This repository contains the configuration for NixVim, a Neovim configuration managed with Nix.
+This repository contains my personal configuration NixVim, a Neovim configuration managed with Nix.
 
 ## General Configuration
 

config/plugins/editor/neo-tree.nix

@@ -18,6 +18,20 @@
         expanderExpanded = " ";
         expanderHighlight = "NeoTreeExpander";
       };
+
+      gitStatus = {
+        symbols = {
+          added = " ";
+          conflict = "󰩌 ";
+          deleted = "󱂥";
+          ignored = " ";
+          modified = " ";
+          renamed = "󰑕";
+          staged = "󰩍";
+          unstaged = "";
+          untracked = "";
+        };
+      };
     };
   };
 

config/plugins/themes/default.nix

@@ -7,6 +7,13 @@
           light = "macchiato";
           dark = "mocha";
         };
+        custom_highlights = ''
+          function(numbercolor)
+            return {
+            CursorLineNr = { fg = numbercolor.peach, style = {} },
+            }
+          end
+        '';
         flavour = "macchiato"; # "latte", "mocha", "frappe", "macchiato" or raw lua code
         no_bold = false;
         no_italic = false;

config/plugins/ui/bufferline.nix

@@ -3,6 +3,12 @@
     bufferline = {
       enable = true;
       diagnostics = "nvim_lsp";
+      mode = "buffers";
+
+      closeIcon = " ";
+      bufferCloseIcon = "󰱝 ";
+      modifiedIcon = "󰔯 ";
+
       offsets = [
         {
           filetype = "neo-tree";

config/plugins/ui/lualine.nix

@@ -25,6 +25,7 @@ _: {
         {
           name = "diagnostics";
           extraConfig = {
+            sources = ["nvim_lsp"];
             symbols = {
               error = " ";
               warn = " ";