feat(v1.1.0): major refactor with modular architecture and plugin support

- Add config.lua for comprehensive configuration options
  (transparent, italic_comments, bold_keywords, bold_functions, bold_types, terminal_colors)
- Add highlights.lua with 500+ highlight groups for 30+ plugins
  (Telescope, NvimTree, Neo-tree, GitSigns, nvim-cmp, Lazy.nvim, Mason, etc.)
- Add colors/ directory for :colorscheme command support
- Add terminal colors (16-color palette for :terminal)
- Add test suite (test/test_colors.lua)
- Add development tools (selene.toml, stylua.toml, vim.toml)
- Add CHANGELOG.md following Keep a Changelog format

- Fix colors.lua not being used by init.lua
- Fix setup(opts) not applying configuration options
- Fix README referencing non-existent files

- Update documentation with accurate file structure and API docs

vim.toml

@@ -0,0 +1,56 @@
+# Vim standard library for Selene
+# Defines Neovim global variables and functions
+
+[vim]
+any = true
+
+[vim.api]
+any = true
+
+[vim.fn]
+any = true
+
+[vim.g]
+any = true
+
+[vim.o]
+any = true
+
+[vim.opt]
+any = true
+
+[vim.cmd]
+any = true
+
+[vim.loop]
+any = true
+
+[vim.lsp]
+any = true
+
+[vim.treesitter]
+any = true
+
+[vim.diagnostic]
+any = true
+
+[vim.keymap]
+any = true
+
+[vim.tbl_extend]
+any = true
+
+[vim.tbl_deep_extend]
+any = true
+
+[vim.deepcopy]
+any = true
+
+[vim.inspect]
+any = true
+
+[vim.notify]
+any = true
+
+[vim.schedule]
+any = true