[Coding style] Include files

[atamazov]

Order of include files

• The more "general" header file is, the lower its position in the source file should be.
• Use empty line to split a list of include files into "sections", according the above rule.
• Each section should be sorted.

Agreed rule of thumb:

• First, includes from miopen
• Then, includes from other libs, except Standard C++ headers
• Then, standard C++ headers

From #2031 (comment)

[atamazov]

Use of <> and "" in #include directives

On behalf of @pfultz2: The quoted form should only be used for headers that are relative to the including file, and everything else should use the angle brackets. In general, MIOpen follows this rule. This is also the guideline from C++ Core Guidelines SF.12.

From #2397 (comment)