Implements the range check builtin which only allows writing Felt that are $< 2^{128}$
Added a program that tries to assert a felt over $2^{128}$, so it could close #31 but adding a few more "bad programs" might be a great idea.
Updated the makefile to compile any Cairo program within the cairo_0 directory
First used recursive wildcard with /**/*.cairo but the Github Action throwed (might have GNU make version < 4.0), so I used shell find -name instead
Added line breaks between builtins & imports on a few Cairo programs
Closes #68
cairo_0directory First used recursivewildcardwith/**/*.cairobut the Github Action throwed (might have GNU make version < 4.0), so I usedshell find -nameinstead