add spacecookie, gopher-proxy, filepath-bytestring and download-curl

These packages are maintained by me:

- spacecookie
- gopher-proxy

Dependencies of those packages which are missing:

- filepath-bytestring
- download-curl

build-constraints.yaml

@@ -11,6 +11,10 @@ cabal-format-version: "3.0"
 packages:
     "Lukas Epple <sternenseemann@systemli.org> @sternenseemann":
         - socket
+        - spacecookie
+        - gopher-proxy
+        - filepath-bytestring
+        - download-curl
 
     "James Sully <sullyj3@gmail.com> @sullyj3":
         - buttplug-hs-core