feat: add kanagawa_dragon theme

Author: ramonvermeulen

THEMES.md

@@ -164,6 +164,15 @@ them based you your `background` option.
 <img width='700' src='https://user-images.githubusercontent.com/41551030/108648902-8f31a080-74bc-11eb-9d8e-37a3f41d4c7a.png'/>
 </p>
 
+### kanagawa_dragon
+
+<p>
+<img width='700' src=''/>
+<img width='700' src=''/>
+<img width='700' src=''/>
+<img width='700' src=''/>
+</p>
+
 ### material
 
 <p>

lua/lualine/themes/kanagawa_dragon.lua

@@ -0,0 +1,49 @@
+-- inspired by kanagawa dragon theme for nvim
+-- https://github.com/rebelot/kanagawa.nvim
+
+local colors = {
+  dragonBlack = '#0D0C0C',
+  dragonGray = '#A6A69C',
+  dragonLightGray = '#C5C9C5',
+  dragonBackground = '#282727',
+  dragonForeground = '#C8C093',
+  dragonRed = '#C4746E',
+  dragonGreen = '#87A987',
+  dragonYellow = '#C4B28A',
+  dragonBlue = '#8BA4B0',
+  dragonOrange = '#B6927B',
+  inactiveGray = '#625e5a',
+}
+
+local shared_sections = {
+  b = { bg = colors.dragonBackground, fg = colors.dragonLightGray },
+  c = { bg = colors.dragonBackground, fg = colors.dragonLightGray },
+}
+
+return {
+  normal = vim.tbl_extend('force', {
+    a = { bg = colors.dragonGray, fg = colors.dragonBlack, gui = 'bold' },
+  }, shared_sections),
+
+  insert = vim.tbl_extend('force', {
+    a = { bg = colors.dragonRed, fg = colors.dragonBlack, gui = 'bold' },
+  }, shared_sections),
+
+  visual = vim.tbl_extend('force', {
+    a = { bg = colors.dragonOrange, fg = colors.dragonBlack, gui = 'bold' },
+  }, shared_sections),
+
+  replace = vim.tbl_extend('force', {
+    a = { bg = colors.dragonBlue, fg = colors.dragonBlack, gui = 'bold' },
+  }, shared_sections),
+
+  command = vim.tbl_extend('force', {
+    a = { bg = colors.dragonGreen, fg = colors.dragonBlack, gui = 'bold' },
+  }, shared_sections),
+
+  inactive = {
+    a = { bg = colors.inactiveGray, fg = colors.dragonGray, gui = 'bold' },
+    b = { bg = colors.inactiveGray, fg = colors.dragonGray },
+    c = { bg = colors.inactiveGray, fg = colors.dragonGray },
+  },
+}