Implement C compiler for self education

[proto-h]

Implement working C compiler for self-education purposes

References

1. https://www.c-language.org/
2. https://www.gnu.org/software/gnu-c-manual/gnu-c-manual.html
3. GCC documentation
4. LLVM documentation
5. Existing C implementations

Interesting C projects

1. https://github.com/c-util/c-stdaux/blob/main/src/test-api.c
2. GNU projects (https://www.gnu.org/software/software.en.html)
   1. Make
   2. Bash
   3. Linux
   4. GNU toolchain (own definition): M4, Autoconf, Automake, Autogen, GNU Library, Libtool
   5. glibc
   6. Binutils
   7. GRUB
   8. Emacs
   9. Bison
   10. Coreutils
   11. Midnight Commander
   12. Hurd: Mach OS microkernel
   13. Sed
   14. GAWK
   15. Smalltalk
3. Python
4. QEMU
5. Jq
6. NVim
7. PostgreSQL
8. PHP
9. Perl
10. Lua
11. PCRE library
12. Nginx, Nginx unit, OpenResty (Nvim relationship via Lua)
13. Redis
14. SQLite
15. Tcl (for Tcl/Tk)
16. Ruby
17. Systemd
18. Valgrind
19. Musl
20. FFmpeg
21. Git
22. Tmux
23. FreeBSD
24. OpenBSD
25. OpenSSH
26. libvirt
27. https://github.com/acassen/keepalived
28. HAProxy

Interesting C++ projects

1. CMake
2. LLVM
3. MariaDB
4. JVM
5. Chromium
6. Fuchsia
7. RR
8. llama.cpp
9. Envoy
10. GNU projects:
    1. R
    2. Octave
    3. GCC
    4. GDB