feat: Added coding guidelines

CODE_GUIDELINES.md

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+# Code Guidelines
+
+## Language
+
+We are using C++20, any C++20 feature supported by vs2019 is allowed.
+
+Please try to use templates responsibly, we don't want compilation times to explode and to deal with bloated binaries.
+
+Try to follow SRP as much as possible, a huge class containing tons of functionnalities is not better than many small components, it's easier to re-use them and to extend.
+
+## Naming
+
+### Variables
+
+The first letter is lower case, other words must start with an upper case : ``someVariableName``.
+
+Function arguments must be prefixed with an ``a`` for 'argument' : ``aFunctionArgument``.
+
+Const variables must be prefixed with a ``c`` for 'const' : ``const int cSomeInt;``
+
+Pointers must be prefixed with a ``p`` for 'pointer' : ``int* pSomePointer``.
+
+The rules above must be used together for example ``void SomeFunc(const int* acpSomeArgument)``.
+
+Static variables must be prefixed with ``s_`` : ``static int s_someInt;``.
+
+Global variables must be prefixed with ``g_`` : ``extern int g_someGlobalInt;``.
+
+### Classes
+
+Class names must start with an upper case : ``class SomeClass``.
+
+Class attributes must be prefixed with ``m_`` and must use the same rules as variables : ``int* m_pSomeMemberPointer;``.
+
+### Functions
+
+All functions must start with an upper case : ``void SomeFunc();``.
+
+## Generalities
+
+Names must be self explanatory, ``size_t a;`` is not acceptable, ``size_t incomingPacketCount;`` is good.
+
+``auto`` is allowed when dealing with long names, it is not accepted for primitive types as we don't want the compiler to give us a signed int when we are using it as unsigned.
+
+Don't use java style blocks, a ``{`` needs to be on a new line.
+
+Don't use exceptions, don't use STL code that can throw, use the nothrow version if available or the unsafe version.
+
+## Commit Naming
+Preface commit messages with one of the following tags:
+* `feat:` for new features
+* `tweak:` for tweaks to an existing system
+* `fix:` for bug fixes and crash fixes
+* `refactor:` for refactoring