More builtin functions to be usable for a user

[Nelson-numerical-software]

Expected list (no new dependency required) modules:

• [x] overload
• [x] console
• [x] function handle
• [x] interpreter
• [x] validators
• [x] types
• [x] string
• [x] data_analysis
• [x] single
• [x] double
• [x] debugger
• [x] logical
• [x] integer
• [x] error_manager
• [x] memory_manager
• [x] stream_manager
• [x] linear_algebra
• [x] elementary_functions
• [x] constructors
• [x] core
• [x] statistics
• [x] time could be also interesting but need to change code (boost -> c++17)

[Nelson-numerical-software]

sparse will be added later

[Nelson-numerical-software]

special_functions required boost (later or never) handle currently not required (if handle type not used)

[Nelson-numerical-software]

all modules with no external libraries are imported. Next task: import tests (in progress)

[Nelson-numerical-software]

ready to go to master