NvChad theme plugin

• This plugin's a whole re-write of Norcalli's plugin.

(Note: This theme plugin is supposed to be used along with NvChad only so watchout!)

Contribute for new themes

• go to hl_themes and add your file, ex: atheme.lua

-- atheme.lua file be like 

local M = {}

M.base_30 = {
  -- some colors 
}

M.base_16 = {
  -- some colors 
}

M = require("base46").override_theme(M, "atheme")

return M

Understanding theme variables

• Read the following for base_16 variables https://github.com/chriskempson/base16/blob/master/styling.md

• Use a color lightening/darkening tool, such as this https://siduck.github.io/hex-tools/

• The following variables are for base_30

black = usually your theme bg 
darker_black = 6% darker than black
black2 = 6% lighter than black

onebg = 10% lighter than black
oneb2 = 19% lighter than black
oneb3 = 27% lighter than black

grey = 40% lighter than black (the % here depends so choose the perfect grey!)
grey_fg = 10% lighter than grey
grey_fg2 = 20% lighter than grey
light_grey = 28% lighter than grey

baby_pink = 15% lighter than red or any babypink color you like!
line = 15% lighter than black 

nord_blue = 13% darker than blue 
sun = 8% lighter than yellow

statusline_bg = 4% lighter than black
lightbg = 13% lighter than statusline_bg
lightbg2 = 7% lighter than statusline_bg

folder_bg = blue color

(note : the above values are mostly approx values so its not compulsory that you have to use those exact numbers , test your theme i.e show it in the PR to get feedback from @siduck)