re-write whole plugin

added features to have local nvchad themes, override specific colors aka variables in nvchad themes

lua/integrations/mail.lua

@@ -0,0 +1,35 @@
+local theme = require("base16").get_colors "base_16"
+
+return {
+   mailQuoted1 = {
+      fg = theme.base0A,
+   },
+
+   mailQuoted2 = {
+      fg = theme.base0B,
+   },
+
+   mailQuoted3 = {
+      fg = theme.base0E,
+   },
+
+   mailQuoted4 = {
+      fg = theme.base0C,
+   },
+
+   mailQuoted5 = {
+      fg = theme.base0D,
+   },
+
+   mailQuoted6 = {
+      fg = theme.base0A,
+   },
+
+   mailURL = {
+      fg = theme.base0D,
+   },
+
+   mailEmail = {
+      fg = theme.base0D,
+   },
+}