1.5 Refactor

For a long time, starting with version 1.0, there was just a single file in src/boot, while many files that are included first appeared in src/kernel, so I moved them to src/boot, and boot.asm is no longer alone. Man, I made up quite a story there. In reality, the refactor actually happened, and it wasn’t because it was unfair, but because I’m a perfectionist. I couldn’t sleep at night thinking, "Why on earth did I create a folder with just one file and nothing else?" especially since a ton of files and functions had appeared in src/kernel that could have been moved there, so that’s exactly what I did