Add abstract compiler
Add parser
Add function calls without parameters 
- every line is one command
- whitespaces trimmed
- printhelloworld function
Add functions with parameters
- change printhelloworld function to println
- add tokenizer: identifier and string constants token types, whitespaces ignored
Add executor
Add generator
Add variables
- assign function 
Add general functions
- change from static functions to dynamic predefined 
Add inputln function
Add integer type
- support for mutiple types
Add begin-end block support
- local variables, constants, types
Add ifzero support
- if condition is valid then skip next command
Add Repeat keyword
- can be exited by Break command and reiterated by Continue

TODO:
Expressions
Enumerations
Arrays
Records
User defined functions
Parametrized Types