add Fil-C (compiler) (#1725)

Author: toge

README.md

@@ -1311,6 +1311,7 @@ A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny
 * [8cc](https://github.com/rui314/8cc) - A Small C Compiler.
 * [c](https://github.com/ryanmjacobs/c) - Compile and execute C "scripts" in one go! [MIT]
 * [Clang](http://clang.llvm.org/) - A C compiler for LLVM. Supports C++11/14/1z C11. Developed by LLVM Team. [NCSA]
+* [Fil-C](https://fil-c.org/) - a fanatically compatible memory-safe implementation of C and C++.
 * [GCC](https://gcc.gnu.org/) - GNU Compiler Collection. Supports C++11/14/1z C11 and OpenMP. [GNU GPL3]
 * [PCC](https://github.com/IanHarvey/pcc) - A very old C compiler. Supports C99.
 * [AMD C++ Compiler](https://www.amd.com/en/developer/aocc.html) - Developed by AMD.