Resolve "Расширение API базы данных подсхем"

Closes #152 (closed) getting a graphical representation of the circuit printDot - method of NPNDatabase to output .dot file as text printDotFile - method of NPNData base to output .dot in file

Same methods of NPNStatDatabase printDot - method of NPNStatDatabase to output .dot file as text printDotFile - method of NPNStatDatabase to output .dot in file printDotQuietly - same as printDot but with quiet get method printDotFileQuietly - same as printDotFile but with quiet get method

getting an information representation of the circuit printInfo - method of NPNDatabase to output info about Subnet

Same methods of NPNStatDatabase printInfo - method of NPNStatDatabase to output info about Subnet printInfoQuietly - same as printInfo but with quiet get method

dbstat console utility DBStatsOptions - struct for options to work with console NPNDBConfig - struct for organise input data npndbPrinter - function to analyze console input