Add basic benchmark (#3038)

* Add basic benchmark

* Add basic documentation for how to run and add tests/benchmarks

* Update benchmark example output

* Add changelog entry

Co-authored-by: zneix <zneix@zneix.eu>

tests/CMakeLists.txt

@@ -12,6 +12,7 @@ set(test_SOURCES
     ${CMAKE_CURRENT_LIST_DIR}/src/TwitchAccount.cpp
     ${CMAKE_CURRENT_LIST_DIR}/src/Helpers.cpp
     ${CMAKE_CURRENT_LIST_DIR}/src/RatelimitBucket.cpp
+    # Add your new file above this line!
     )
 
 add_executable(${PROJECT_NAME} ${test_SOURCES})