Added skeleton FlaskApp and PHPApp
Added skeleton FlaskApp and PHPApp

RitwikGupta/picoCTF-shell-manager,RitwikGupta/picoCTF-shell-manager,picoCTF/picoCTF-shell-manager,cganas/picoCTF-shell-manager,cganas/picoCTF-shell-manager,cganas/picoCTF-shell-manager,picoCTF/picoCTF-shell-manager,picoCTF/picoCTF-shell-manager,cganas/picoCTF-shell-manager,RitwikGupta/picoCTF-shell-manager,picoCTF/picoCTF-shell-manager,RitwikGupta/picoCTF-shell-manager