Setting UpdateTypeClientInfo to UpdateFrequencyAutomatically throws Panic when server info is queried.

[Baa14453]

This is very odd, but if you request that UpdateTypeClientInfo is set to UpdateFrequencyAutomatically ie:
sess.RequestUpdates(enum.UpdateTypeClientInfo, enum.UpdateFrequencyAutomatically)

and then query server info, by either viewing the server in OpenTTD Multiplayer List or clicking the Refresh server

gopenttd will Panic with:

"reflect.Set: value of type uint8 is not assignable to type enum.NetE...
Stack:
	2  0x00000000004a4ad1 in reflect.Value.assignTo
	    at /snap/go/current/src/reflect/value.go:2797
	3  0x00000000004a1a32 in reflect.Value.Set
	    at /snap/go/current/src/reflect/value.go:1905
	4  0x000000000075d51e in github.com/ropenttd/gopenttd/pkg/admin.ottdUnmarshalData
	    at /home/baa/go/pkg/mod/memleak.eu/sn0w/gopenttd@v0.0.0-20211127193137-1cf6e0e4dba6/pkg/admin/proto_unmarshal.go:46
	5  0x000000000075d0b8 in github.com/ropenttd/gopenttd/pkg/admin.ottdUnmarshal
	    at /home/baa/go/pkg/mod/memleak.eu/sn0w/gopenttd@v0.0.0-20211127193137-1cf6e0e4dba6/pkg/admin/proto_unmarshal.go:26
	6  0x000000000075c2c5 in github.com/ropenttd/gopenttd/pkg/admin.(*Session).onEvent
	    at /home/baa/go/pkg/mod/memleak.eu/sn0w/gopenttd@v0.0.0-20211127193137-1cf6e0e4dba6/pkg/admin/proto_api.go:419
	7  0x000000000075b42b in github.com/ropenttd/gopenttd/pkg/admin.(*Session).listen
	    at /home/baa/go/pkg/mod/memleak.eu/sn0w/gopenttd@v0.0.0-20211127193137-1cf6e0e4dba6/pkg/admin/proto_api.go:287
	8  0x000000000075a1c7 in github.com/ropenttd/gopenttd/pkg/admin.(*Session).Open·dwrap·10
	    at /home/baa/go/pkg/mod/memleak.eu/sn0w/gopenttd@v0.0.0-20211127193137-1cf6e0e4dba6/pkg/admin/proto_api.go:108

I find that setting type NetError uint8 to type NetError int8 under pgk/enum/constants.go resolves the issue... but I'm not sure if that's correct or not: https://memleak.eu/sn0w/gopenttd/commit/63e5c696f0cd942a7b7388881e08f95225ce88ac