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

selene.toml

@@ -0,0 +1,48 @@
+# Selene configuration for CargDev-Cyberpunk.nvim
+# https://kampfkarren.github.io/selene/
+
+std = "lua51+vim"
+
+[lints]
+# Allow globals from Neovim
+global_usage = "allow"
+# Unused variables warnings
+unused_variable = "warn"
+# Empty if statements
+empty_if = "warn"
+# Deprecated features
+deprecated = "warn"
+# Dividing by zero
+divide_by_zero = "warn"
+# Duplicate keys in tables
+duplicate_keys = "deny"
+# If statements with the same body
+if_same_then_else = "warn"
+# Incorrect standard library usage
+incorrect_standard_library_use = "deny"
+# Manual table clone
+manual_table_clone = "warn"
+# Mismatched argument count
+mismatched_arg_count = "warn"
+# Multiple statements on one line
+multiple_statements = "allow"
+# Parentheses condition
+parenthese_conditions = "warn"
+# Shadowing
+shadowing = "allow"
+# Type checking
+type_check_inside_call = "warn"
+# Unbalanced assignments
+unbalanced_assignments = "warn"
+# Undefined variables
+undefined_variable = "deny"
+# Unreachable code
+unreachable_code = "warn"
+# Unscoped variables
+unscoped_variables = "warn"
+# Unused functions
+unused_function = "warn"
+
+[config]
+# Files to exclude from linting
+exclude = [".git"]