[meta] Low hanging fruits

[szledan]

This meta issue collects some easy feature issues tagged with LHF label.

Good luck! :)

1. Goodies

• Renaming macros Renaming macros/defines according to coding-style #68
• Base surface Create Base surface #49 [Initial commit of GLES2 engine #54]
  • PNG Surface
  • EGL Surface
  • Use smart pointers Use SMART pointers in API classes #51
  • Implement Path API part in GepardEngine (it's easy) Implement GepardEngine Path API part in gepard-engine.cpp #52
• Create a simple fillRect example [example] Create a simple fillRect example #44 [Initial commit of GLES2 engine #54,]
• Move util/gepard-types implementation from header to cpp Move util/gepard-types implementation from header to cpp #59
• Append logging with an error macro Append logging with an error macro #70 [Improve Gepard LOG macros #74]

2. Infrastucture (@dbatyai)

• Improve build system
  • Guarding in cmake
    • Include only directories
• Setup cppcheck [Add suppression list for cppcheck and standardize script arguments #55]

3. GLES2 features (@szledan, @kkristof)

• Design a command queue & implement a base version
• Design a shader factory & implement a base version
  • Create simple texture shader
  • Create simple rect shader
  • Shader collector

4. Vulkan features (@kkristof)

5. CPU simulated rendering (@szledan)