V15: Make default max payload size more friendly

[nikolajlauridsen]

Defaults the cache MaximumPayloadBytes to 100MB instead of 1 MB, otherwise large content nodes may throw an error, especially if there's multiple languages and large properties like blockgrid is used.

This setting can always be overwritten using

public class MyComposer : IComposer
{
    public void Compose(IUmbracoBuilder builder)
    {
#pragma warning disable EXTEXP0018
        builder.Services.AddOptions<HybridCacheOptions>().Configure(x =>
        {
            x.MaximumPayloadBytes = 1024*1024;
        });
#pragma warning restore EXTEXP0018
    }
}