Upgrade to .NET 9 and OTAPI Static Hooks

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This is a draft PR until the sister PR at TSAPI is merged: Pryaxis/TSAPI#254
Subsequently have not yet updated the submodule here, so CI is expected to fail currently.

The specific TShock changes/todos are as follows:

• Removed the reset client patch, as OTAPI addresses it now, as well as decouples from monomod
• Removed the achievement initialisers IL modification, utilising static hooks instead, again to decouple from monomod to enable arm64
• Workflow updates for actions to be moved to v4 (cc @hakusaro), and net9 sdk
• Upgraded installer to net9 runtime urls
• Updated launcher plugin manager execution to address assembly failures before resolvers were attaching
• Updated launcher for dev assembly resolution
• Update nuget packages (todo)
• Update TSAPI when merged (figured changing the url isnt wise, so will await for gen-dev merge)
• Alter CI if failing after TSAPI merge
• Update changelog
• Public testing before final merge imo, e.g. hooks (no regressions), and apple silicon etc
• Member review of package updates
• Review docker, fine to proceed, need a revert?

For those who haven't looked at the TSAPI changes (pending PR merge), it's changes are copied in below:

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This PR aims for the following:

• Target frameworks & workflows updated to net9.0
• OTAPI and other packages updated
• Moved to generated OTAPI static hooks, making MonoMod RD optional/supplemental (though, OTAPI.Runtime.dll is still included for those still utilising it, and works on net9)
  • Note: File scoped namespaces was utilised, which is why the diff is more than expected.
• Expanded workflow to test each platform
• Reduced OTAPI/ModFw console outputs (e.g. no tile ctor print, short version codes etc)

Considerations that may flow through to a TShock PR (or sooner if desired):

• OTAPI Static Hook namespace naming preferences e.g. HookEvents.* vs MonoMod RD On.*
• OTAPI Static Hook EventArgs property naming preferences e.g. ContinueExecution, HookReturnValue
• If any extra static hooks are needed, current list includes most methods from the following Terraria types:
  • Main, Item, NetMessage, Netplay, NPC, WorldGen, Chat.ChatHelper, IO.WorldFile, Net.NetManager, Projectile, RemoteClient, Liquid, Program.
• Apple Silicon / ARM64 testing
• Plugin updates: at the moment should just be a matter of ticking up to net9.0, and matching dependencies/updating

Screenshots

Windows x64

MacOS Arm64

Joining Mac Arm64 from Win64: