added linux support

[DerpyNoob740]

added and tested linux support, everything seems to be fine. also tweaked the cookie grabber to make it easier and more compatible. added build instructions for building to linux (albeit idk how it would be achieved on windows)

[KarmaDevz]

Hi, thank you for your support. I've been reviewing the recent updates and there are a few improvements we would like to make:

1. Compile and test the Linux version of dumb (currently dumb.exe only opens a 1x1 pixel window) and add it to the tools folder. The goal is to check if we can save Game Activity for Linux users.
2. Steam cookie access. Since most Linux users typically use Firefox rather than Microsoft Edge, especially on common distributions such as Ubuntu, we need to find a way to access the Steam cookies from Firefox. These cookies are required to retrieve the necessary data to display detailed game information through RPC (e.g., specific missions or in-game progress).

If accessing cookies from Firefox is not possible, we may need to consider installing or supporting Microsoft Edge on Linux as an alternative.
What do you think?

[DerpyNoob740]

thanks for reviewing! to answer your questions

1. I honestly just assumed dumb.exe was a windows only thing, if you could provide the sourcecode so I can look into Linux translation I would greatly appreciate it!

2. I actually ensured other browsers like chrome, Firefox, and the original edge are supported for cookie grabbing (see line 60 in cookie_manager) and it seems to work just fine for all browsers (although more in-depth testing couldn't hurt)

again, I appreciate you working with me on this!

[KarmaDevz]

To be honest, I lost the code. I thought I had pushed it in one of the initial commits, but apparently I didn’t. I just remember it was a Tkinter window with no title bar, around 10x10 pixels. It also didn’t show up in the taskbar or in the Alt + Tab window switcher. Since the .exe isn’t protected, I might try to recover the source code, or I could just recreate it with a few lines of code.