Add some diagrams-related packages

I believe all these should build with nightly, although I have not been able to explicitly test all of them.

build-constraints.yaml

@@ -683,12 +683,20 @@ packages:
         # - diagrams # lens 4.16
         # - diagrams-builder # haskell-src-exts
         - diagrams-cairo
+        - diagrams-gtk
         - diagrams-contrib
+        - diagrams-solve
         - diagrams-core
         - diagrams-lib
         - diagrams-rasterific
         - diagrams-svg
+        - diagrams-html5
+        - diagrams-canvas
+        - diagrams-postscript
+        - diagrams-graphviz
         - force-layout
+        - SVGFonts
+        - palette
         - haxr < 0 # GHC 8.4 via HaXml
         - MonadRandom
         - monoid-extras