add Chapter01 examples

Chapter01/README.md

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+# Chapter01
+This folder contains examples in C and C++ from first chapter. 
+
+These are standalone examples that can be compiled by most compilers for x86_64 architecture. 
+
+You can explore the examples online in [Compiler Explorer](https://godbolt.org/).
+
+The folder contains following examples:
+- ring_buffer.c 
+- ring_buffer_type_erasure.c
+- ring_buffer_compile_time_generic.c
+- ring_buffer.cpp
+- compile_time_const.c
+- compile_time_const.cpp
+- compile_time_square_func.cpp
+- undefined_behavior.cpp
+- bloat.cpp
+- rtti.cpp
+- exceptions.cpp