[v0.4.9] [HAPI-117] Improving projects performance

HAPI-117 Improving projects performance

• Created tools to measure the heap memory
• Worked on make the code smaller so it consume less memory for each user stream

Tasks

• HAPI-118 Create the MemoryAnalyser instance (#142)
• HAPI-119 Turn apiServer prop of ServerAPI, into a getter (#143)
• HAPI-120 Fix "require" importations (#144)
• HAPI-121 Implement a new Error handling approach (#145)