Use glamour and termev to render/colorize content (#181)

Merge branch 'master' into use-glamour

select Glamour Theme based on BackgroundColor

Merge branch 'master' into use-glamour

Merge branch 'master' into use-glamour

update termev

update go.mod

label color colorate

use glamour for issue content

Vendor: Add glamour

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://gitea.com/gitea/tea/pulls/181
Reviewed-by: techknowlogick <techknowlogick@gitea.io>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>

vendor/github.com/alecthomas/chroma/styles/swapoff.go

@@ -0,0 +1,25 @@
+package styles
+
+import (
+	"github.com/alecthomas/chroma"
+)
+
+// SwapOff theme.
+var SwapOff = Register(chroma.MustNewStyle("swapoff", chroma.StyleEntries{
+	chroma.Background:        "#lightgray bg:#black",
+	chroma.Number:            "bold #ansiyellow",
+	chroma.Comment:           "#ansiteal",
+	chroma.CommentPreproc:    "bold #ansigreen",
+	chroma.String:            "bold #ansiturquoise",
+	chroma.Keyword:           "bold #ansiwhite",
+	chroma.NameKeyword:       "bold #ansiwhite",
+	chroma.NameBuiltin:       "bold #ansiwhite",
+	chroma.GenericHeading:    "bold",
+	chroma.GenericSubheading: "bold",
+	chroma.GenericStrong:     "bold",
+	chroma.GenericUnderline:  "underline",
+	chroma.NameTag:           "bold",
+	chroma.NameAttribute:     "#ansiteal",
+	chroma.Error:             "#ansired",
+	chroma.LiteralDate:       "bold #ansiyellow",
+}))