Adding logic to re-escape backslashes for CLI session properties file values

[fabiobrz]

In the context of CLI script execution, this is to re-escape backslashes once they have been loaded from the properties file.

The current implementation is a bit wild swince it just handles all the backslash occurrences, since it seems to me the issue is a general one. A more specific implementation is could be proposed to handle just values that match the windows path regex.

Feel free to let me know what you think @jfdenise, CC @yersan

Fixes #164

[jfdenise]

I am not sure we should handle this case. This syntax has been present since the start of Bootable JAR, CLI expects '\' to be escaped. So c:\x\y\z should be c:\x\y\z. Inside a properties file, this means c:\\x\\y\\z On Windows you can use forward slash, so c:/x/y/z would work.

[jamezp]

I agree with @jfdenise here.

[fabiobrz]

Closing the PR as per the feedback received in #164