nitdbg: Added module and class Breakpoint

Signed-off-by: Lucas BAJOLET <r4pass@hotmail.com>
nitdbg: Placed foundations for Breakpoints, can search in a HashMap if the breakpoint exists

Signed-off-by: Lucas BAJOLET <r4pass@hotmail.com>
nitdbg: Can place a breakpoint on a line of a file

Signed-off-by: Lucas BAJOLET <r4pass@hotmail.com>
nitdbg: Can break on a breakpoint

Signed-off-by: Lucas BAJOLET <r4pass@hotmail.com>
nitdbg: Can remove breakpoints

Signed-off-by: Lucas BAJOLET <r4pass@hotmail.com>