V8 Engine update and improvements in Zenda

Google V8 was updated to its latest version, a new function was also implemented in Zenda to see the arguments with which a script was called, also a new argument (--install-dependencies) was added which installs the necessary dependencies To run zenda in the operating system, it was also renamed to run python.

The way a file is executed was also changed, now you need to pass it the --execute argument followed by the file's address, a new --help argument was also implemented to obtain a list with the valid arguments that the executable receives.