Add docket repo descriptor, and declare the vendored tree excluded

Changed

 .docket.json | 8 ++++++++
 1 file changed, 8 insertions(+)

Diff

@@ -0,0 +1,8 @@

{

"status": "active",

"summary": "2D graphics, image loading, and font rendering for Sigil",

"group": "Graphics and sound",

"exclude": [

"vendor"

]

}