add Umami analytics (#15)

This requires using a fork of the theme, since
imfing/hextra#328 isn't merged yet.

go.mod

@@ -2,4 +2,8 @@ module github.com/quic-go/docs
 
 go 1.22.0
 
+// Using the fork is only needed until the PR adding support for Umami is merged:
+// https://github.com/imfing/hextra/pull/328
+replace github.com/imfing/hextra => github.com/marten-seemann/hextra v0.0.0-20240321085151-430a25fbf9d1
+
 require github.com/imfing/hextra v0.7.3 // indirect

go.sum

@@ -1,2 +1,2 @@
-github.com/imfing/hextra v0.7.3 h1:dVGA1NTcWe+FaUMdrawEypPfrrmulq5NoK0we3nC330=
-github.com/imfing/hextra v0.7.3/go.mod h1:cEfel3lU/bSx7lTE/+uuR4GJaphyOyiwNR3PTqFTXpI=
+github.com/marten-seemann/hextra v0.0.0-20240321085151-430a25fbf9d1 h1:GexfSlfqrqx3u/MS8P03u8KjaWMAfH23Afk63MhINJ8=
+github.com/marten-seemann/hextra v0.0.0-20240321085151-430a25fbf9d1/go.mod h1:cEfel3lU/bSx7lTE/+uuR4GJaphyOyiwNR3PTqFTXpI=

hugo.yaml

@@ -53,3 +53,7 @@ params:
   editURL:
     enable: true
     base: "https://github.com/quic-go/docs/tree/master/content"
+  umami:
+    serverURL: "analytics.seemann.io"
+    id: "c8e5d798-f535-4fea-906f-93da2e05a771"
+    trackerScriptName: "script.js"