Send commands directly to game instead of using -hijack

[ghost]

Whats up big paz

Instead of launching a new temporary instance of TF2 every time you want to add a command to the command buffer, you can do it directly by sending a window message (WM_COPYDATA) containing the command string.

This is actually how -hijack works internally: https://github.com/TheAlePower/TeamFortress2/blob/1b81dded673d49adebf4d0958e52236ecc28a956/tf2_src/launcher/launcher.cpp#L1375

This will fix those errors at the bottom of the readme that some users are getting. Also, it's probably faster 'cause you don't have to create a new process.

-Roboot

[ghost]

@PazerOP I go out of my way to try and improve your software and my reward is a ban from the Discord server? What's up with that?

[CoolcGuy]

he pulled a yandere dev lmao

[fx-chun]

@notroboot I just got kicked immediately after pinging him with a PR

???

[Chellyyyyy]

What were your discord names?

[PazerOP]

@KingTerrytheTerrible sorry about that, you have been unbanned. @notroboot and @noneucat, can you please dm me on discord? My ID is pazer#8137.

About this PR, I specifically did not want to implement it this way because I was uncomfortable (as far as VAC goes) sending window messages directly to the game. I felt it was less suspicious to have the window messages come from a shipped hl2.exe.

[PazerOP]

also @CoolcGuy please dm me if you were also banned. I'm going to bed now but i'll get back to you in the morning.

[PazerOP]

This pull request is being closed because @notroboot is acting in bad faith and has many ties to cheaters.