Bootloader: Start work on bootloader

I wrote a fast first stage bootloader and a installer to put it into
a disk image.

bootloader/installer/CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.26)
+
+project(x86_64-banan_os-bootloader-installer CXX)
+
+set(SOURCES
+    crc32.cpp
+    ELF.cpp
+    GPT.cpp
+    GUID.cpp
+	main.cpp
+)
+
+add_executable(x86_64-banan_os-bootloader-installer ${SOURCES})
+target_compile_options(x86_64-banan_os-bootloader-installer PUBLIC -O2 -std=c++20)