Add kanagawa theme

lua/install-plugins.lua

@@ -450,6 +450,12 @@ return require('packer').startup(function(use)
   use 'eandrju/cellular-automaton.nvim'
   use 'nyoom-engineering/oxocarbon.nvim'
   use 'folke/tokyonight.nvim'
+  use {
+    'rebelot/kanagawa.nvim',
+    config = function()
+      require('plugins.kanagawa-nvim')
+    end,
+  }
   use {
     'lifepillar/pgsql.vim',
     ft = { 'sql' },

lua/plugins/kanagawa-nvim.lua

@@ -0,0 +1 @@
+require('kanagawa').setup()