Add js web stuff to landing page + documentation

go/cmd/kjol-web/app/client.gen.go

@@ -0,0 +1,13 @@
+// Code generated by wasmgen. DO NOT EDIT.
+
+//go:build js && wasm
+
+package app
+
+import (
+	"kjol/rsc"
+	"kjol/vdom"
+)
+
+// ServerCounter is a generated client stub for the server component of the same name.
+func ServerCounter() func() *vdom.VNode { return rsc.Mount("ServerCounter") }