feat: Support diffchar.vim plugin highlights

Fixed #216

CHANGELOG.md

@@ -51,6 +51,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Support [fzf-lua](https://github.com/ibhagwan/fzf-lua) plugin highlights #221
 - Support [neo-tree.nvim](https://github.com/nvim-neo-tree/neo-tree.nvim) plugin highlights #221
 - Support [dap-ui](https://github.com/rcarriga/nvim-dap-ui) plugin highlights #207
+- Support [diffchar.vim](https://github.com/rickhowe/diffchar.vim) plugin highlights #216
 
 ### Issues Fix
 

README.md

@@ -199,6 +199,7 @@ vim.cmd('colorscheme github_dark')
   [coc.nvim](https://github.com/neoclide/coc.nvim),
   [dap-ui](https://github.com/rcarriga/nvim-dap-ui),
   [dashboard-nvim](https://github.com/glepnir/dashboard-nvim),
+  [diffchar.vim](https://github.com/rickhowe/diffchar.vim),
   [diffview.nvim](https://github.com/sindrets/diffview.nvim),
   [fidget.nvim](https://github.com/j-hui/fidget.nvim),
   [fsread.nvim](https://github.com/nullchilly/fsread.nvim),

lua/github-theme/config.lua

@@ -56,6 +56,7 @@ M.module_names = {
   'cmp',
   'coc',
   'dapui',
+  'diffchar',
   'dashboard',
   'diagnostic',
   'fidget',

lua/github-theme/group/modules/diffchar.lua

@@ -0,0 +1,14 @@
+-- https://github.com/rickhowe/diffchar.vim
+
+local M = {}
+
+function M.get(spec, config, opts)
+  return {
+    DiffAdd = { link = 'diffAdded' },
+    DiffChange = { link = 'diffChanged' },
+    DiffDelete = { link = 'diffRemoved' },
+    DiffText = { fg = spec.fg1, bg = spec.bg2 },
+  }
+end
+
+return M