Add material_darker theme (#197)

* add material theme

* syntax highlighting

* `polish_hl` should support adding any highlighting the theme author desires

* organise colours

* move git stuff to custom

* more syntax highlighting

* get lsp and treesitter hl as close as possible

* Refactor and Improve material_darker.lua

---------

Co-authored-by: Sidhanth Rathod <siduck@tutanota.com>

lua/base46/themes/material_darker.lua

@@ -0,0 +1,116 @@
+--- Credits to original theme https://github.com/marko-cerovac/material.nvim for existing
+-- This is a modified version of it
+
+local M = {}
+
+M.base_30 = {
+  white = "#eeffff",
+  darker_black = "#191919",
+  black = "#212121", --  nvim bg
+  black2 = "#292929",
+  one_bg = "#303030",
+  one_bg2 = "#383838",
+  one_bg3 = "#404040",
+  grey = "#4A4A4A",
+  grey_fg = "#545454",
+  grey_fg2 = "#5E5E5E",
+  light_grey = "#6B6B6B",
+  red = "#f07178",
+  baby_pink = "#FFADFF",
+  pink = "#DA70CA",
+  line = "#383838", -- for lines like vertsplit
+  green = "#c3e88d",
+  vibrant_green = "#c3e88d",
+  nord_blue = "#6e98eb",
+  blue = "#82aaff",
+  yellow = "#ffcb6b",
+  sun = "#e6b455",
+  purple = "#c792ea",
+  dark_purple = "#b480d6",
+  teal = "#abcf76",
+  orange = "#f78c6c",
+  cyan = "#89ddff",
+  statusline_bg = "#262626",
+  lightbg = "#323232",
+  pmenu_bg = "#6e98eb",
+  folder_bg = "#6e98eb",
+}
+
+M.base_16 = {
+  base00 = "#212121",
+  base01 = M.base_30.black2,
+  base02 = M.base_30.one_bg,
+  base03 = M.base_30.one_bg2,
+  base04 = M.base_30.one_bg3,
+  base05 = "#DFF0F0",
+  base06 = "#E6F7F7",
+  base07 = "#eeffff",
+  base08 = "#b0bec5",
+  base09 = "#f78c6c",
+  base0A = "#ffcb6b",
+  base0B = "#c3e88d",
+  base0C = "#c3e88d",
+  base0D = "#82aaff",
+  base0E = M.base_30.purple,
+  base0F = "#f07178",
+}
+
+M.type = "dark"
+
+M.polish_hl = {
+  treesitter = {
+    ["@attribute"] = { fg = M.base_30.purple },
+    ["@conditional.ternary"] = { fg = M.base_30.cyan },
+    ["@constant"] = { fg = M.base_30.yellow },
+    ["@constant.builtin"] = { link = "@constant" },
+    ["@constructor"] = { fg = M.base_30.cyan },
+    ["@delimiter"] = { fg = M.base_30.pink },
+    ["@keyword.exception"] = { fg = M.base_30.purple },
+    ["@variable.member"] = { fg = M.base_30.white },
+    ["@function"] = { fg = M.base_30.blue },
+    ["@function.macro"] = { fg = M.base_30.pale_blue },
+    ["@keyword"] = { fg = M.base_30.cyan },
+    ["@module"] = { fg = M.base_30.yellow },
+    ["@operator"] = { fg = M.base_30.cyan },
+    ["@parenthesis"] = { link = "@punctuation.bracket" },
+    ["@punctuation.bracket"] = { fg = M.base_30.pink },
+    ["@punctuation.delimiter"] = { fg = M.base_30.pink },
+    ["@keyword.repeat"] = { fg = M.base_30.purple },
+    ["@string"] = { fg = M.base_30.green },
+    -- ["@type"] = { fg = M.base_30.yellow },
+    ["@type.qualifier"] = { fg = M.base_30.cyan },
+    -- ["@variable.type"] = { fg = M.base_30.yellow },
+  },
+
+  syntax = {
+    Identifier = { fg = M.base_30.white },
+    Include = { fg = M.base_30.purple },
+    Number = { fg = M.base_30.orange },
+    Structure = { fg = M.base_30.green },
+    Type = { fg = M.base_30.purple },
+  },
+
+  semantic_tokens = {
+    ["@lsp.type.annotation"] = { fg = M.base_30.purple },
+    ["@lsp.type.class"] = { fg = M.base_30.yellow },
+    ["@lsp.type.enum"] = { link = "@lsp.type.class" },
+    ["@lsp.type.enumMember"] = { link = "@lsp.type.property" },
+    ["@lsp.type.interface"] = { fg = M.base_30.green, italic = true },
+    ["@lsp.type.method"] = { fg = M.base_30.blue },
+    ["@lsp.type.modifier"] = { fg = M.base_30.purple },
+    ["@lsp.type.namespace"] = { link = "@lsp.type.class" },
+    ["@lsp.type.parameter"] = { fg = M.base_30.orange },
+    ["@lsp.type.property"] = { fg = M.base_30.white },
+    ["@lsp.type.variable"] = { fg = M.base_30.white },
+    ["@lsp.typemod.class.constructor"] = { link = "@lsp.type.method" },
+    ["@lsp.typemod.record"] = { link = "@lsp.type.class" },
+  },
+
+  telescope = {
+    TelescopeMatching = { fg = M.base_30.accent },
+  },
+}
+
+M = require("base46").override_theme(M, "material_darker")
+
+return M