feat(nvim): plugins, fixes, helpers

Plugins:
- voldikss/vim-floaterm
- vim-test/vim-test
- tpope/vim-projectionist
- phpactor/phpactor
- catgoose/nvim-colorizer.lua

Fixes:
- lsp diagnostics config
- lsp diagnostics icons
- neo-tree configuration fixes
- tokyonight.nvim color scheme tweaks

Lots of tweaks to options.lua

config/nvim/lua/plugins/ui.lua

@@ -7,6 +7,121 @@ return {
     init = function() vim.cmd.colorscheme(vim.g.colors_theme) end,
     opts = {
       transparent = true,
+      on_colors = function(colors)
+        colors.gitSigns = {
+          add = colors.teal,
+          change = colors.purple,
+          delete = colors.red,
+        }
+      end,
+      on_highlights = function(hl, c)
+        local util = require 'tokyonight.util'
+        local prompt = '#2d3149'
+
+        hl.NeoTreeFileNameOpened = {
+          fg = c.orange,
+        }
+
+        hl.GitSignsCurrentLineBlame = {
+          fg = c.fg_gutter,
+        }
+
+        hl.StatusLine = {
+          bg = util.darken(c.bg_dark, 0.98, '#000000'),
+          fg = c.fg_dark,
+        }
+        hl.StatusLineComment = {
+          bg = util.darken(c.bg_dark, 0.85, '#000000'),
+          fg = c.comment,
+        }
+
+        hl.LineNrAbove = {
+          fg = c.fg_gutter,
+        }
+        hl.LineNr = {
+          fg = util.lighten(c.fg_gutter, 0.7),
+        }
+        hl.LineNrBelow = {
+          fg = c.fg_gutter,
+        }
+
+        hl.MsgArea = {
+          bg = util.darken(c.bg_dark, 0.85, '#000000'),
+        }
+
+        -- Spelling
+        hl.SpellBad = {
+          undercurl = true,
+          sp = '#7F3A43',
+        }
+
+        -- Telescope
+        hl.TelescopeNormal = {
+          bg = c.bg_dark,
+          fg = c.fg_dark,
+        }
+        hl.TelescopeBorder = {
+          bg = c.bg_dark,
+          fg = c.bg_dark,
+        }
+        hl.TelescopePromptNormal = {
+          bg = prompt,
+        }
+        hl.TelescopePromptBorder = {
+          bg = prompt,
+          fg = prompt,
+        }
+        hl.TelescopePromptTitle = {
+          bg = c.bg,
+          fg = c.fg_dark,
+        }
+        hl.TelescopePreviewTitle = {
+          bg = c.bg_dark,
+          fg = c.bg_dark,
+        }
+        hl.TelescopeResultsTitle = {
+          bg = c.bg_dark,
+          fg = c.bg_dark,
+        }
+
+        -- Indent
+        hl.MiniIndentscopeSymbol = {
+          fg = util.darken(c.bg_highlight, 0.30),
+        }
+        hl.IblScope = {
+          fg = util.darken(c.bg_highlight, 0.80),
+        }
+
+        -- Floaterm
+        hl.Floaterm = {
+          bg = prompt,
+        }
+        hl.FloatermBorder = {
+          bg = prompt,
+          fg = prompt,
+        }
+
+        -- Copilot
+        hl.CopilotSuggestion = {
+          fg = c.comment,
+        }
+
+        -- NeoTree
+        hl.NeoTreeFileNameOpened = {
+          fg = c.fg,
+          bold = true,
+        }
+        hl.NvimTreeNormal = {
+          bg = util.darken(c.bg_dark, 0.85, '#000000'),
+        }
+        hl.NvimTreeNormalNC = {
+          bg = util.darken(c.bg_dark, 0.85, '#000000'),
+        }
+        hl.NvimTreeWinSeparator = {
+          fg = util.darken(c.bg_dark, 0.85, '#000000'),
+          bg = util.darken(c.bg_dark, 0.85, '#000000'),
+        }
+      end,
     },
   },
 
@@ -27,6 +142,17 @@ return {
     },
   },
 
+  -- The fastest Neovim colorizer
+  -- https://github.com/catgoose/nvim-colorizer.lua
+  {
+    'catgoose/nvim-colorizer.lua',
+    opts = {
+      user_default_options = {
+        names = false,
+      },
+    },
+  },
+
   -- A neovim plugin that shows colorcolumn dynamically
   -- https://github.com/Bekaboo/deadcolumn.nvim
   { 'Bekaboo/deadcolumn.nvim' },