Reduce size of game binaries

[ForNeVeR]

Currently, the published game binaries are enormous, more than 100 MiB when unpacked (per platform).

For comparison, the original game was about 3 MiB unpacked.

We can significantly (in my experiments — up to 3× in size) reduce this size by using assembly trimming.

But after any trimming, the game stops working for me :(

So let's enable trimming and figure it out.

Here's a patch to enable trimming (and single-file deployment, while we are at it):

Index: O21.Game/O21.Game.fsproj
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
diff --git a/O21.Game/O21.Game.fsproj b/O21.Game/O21.Game.fsproj
--- a/O21.Game/O21.Game.fsproj	(revision Staged)
+++ b/O21.Game/O21.Game.fsproj	(date 1747580079091)
@@ -9,6 +9,8 @@
    <PropertyGroup>
        <OutputType>Exe</OutputType>
        <TargetFramework>net9.0</TargetFramework>
+        <PublishTrimmed>true</PublishTrimmed>
+        <PublishSingleFile>true</PublishSingleFile>
    </PropertyGroup>

    <ItemGroup>

And here's a command to publish the game to check it out in this mode:

$ dotnet publish O21.Game --self-contained --runtime win-x64 --configuration Release --output publish.win-x64

This results in an exception:

Unhandled exception. System.InvalidOperationException: Type O21.CommandLine.Arguments+StartGame appears to be immutable, but no constructor found to accept values.
   at CommandLine.Infrastructure.ReflectionHelper.CreateDefaultImmutableInstance(Type type, Type[] constructorTypes)
   at CommandLine.Core.ReflectionExtensions.AutoDefault(Type type)
   at CommandLine.Core.InstanceChooser.<>c__DisplayClass3_0.<MatchVerb>b__1()
   at CommandLine.Core.InstanceBuilder.<>c__1`1.<Build>b__1_0(Func`1 f)
   at CSharpx.MaybeExtensions.MapValueOrDefault[T1,T2](Maybe`1 maybe, Func`2 func, T2 noneValue)
   at CommandLine.Core.InstanceBuilder.Build[T](Maybe`1 factory, Func`3 tokenizer, IEnumerable`1 arguments, StringComparer nameComparer, Boolean ignoreValueCase, CultureInfo parsingCulture, Boolean autoHelp, Boolean autoVersion, Boolean allowMultiInstance, IEnumerable`1 nonFatalErrors)
   at CommandLine.Core.InstanceChooser.MatchVerb(Func`3 tokenizer, IEnumerable`1 verbs, Tuple`2 defaultVerb, IEnumerable`1 arguments, StringComparer nameComparer, Boolean ignoreValueCase, CultureInfo parsingCulture, Boolean autoHelp, Boolean autoVersion, Boolean allowMultiInstance, IEnumerable`1 nonFatalErrors)
   at CommandLine.Core.InstanceChooser.<Choose>g__choose|1_1(<>c__DisplayClass1_0&)
   at CommandLine.Core.InstanceChooser.Choose(Func`3 tokenizer, IEnumerable`1 types, IEnumerable`1 arguments, StringComparer nameComparer, Boolean ignoreValueCase, CultureInfo parsingCulture, Boolean autoHelp, Boolean autoVersion, Boolean allowMultiInstance, IEnumerable`1 nonFatalErrors)
   at CommandLine.Parser.ParseArguments(IEnumerable`1 args, Type[] types)
   at CommandLine.ParserExtensions.ParseArguments[T1,T2,T3](Parser parser, IEnumerable`1 args)
   at O21.CommandLine.CommandLineParser.parseArguments(String[] args, IConsole reporter, FSharpFunc`2 worker) in G:\Projects\O21\O21.CommandLine\CommandLineParser.fs:line 38
   at Program.main(String[] args) in G:\Projects\O21\O21.Game\Program.fs:line 112