Added default filenames and fixes

[cschuchardt88]

Change Log

• Updated batch command to use ResolveFileName for new default path
• Fixed bug with ResolveFileName; not adding extension
• Added default policy filename
• Removed policy sync on create command
• Fixed bug with sync not being used in batch files
• Changed sync resolve path for default policy and to resolve to global directory
• Added defaults for setup.batch on create command

Directory %userprofile%\.neo-express defaults

Example content

checkpoint create checkpoints/init-blockchain -f
policy sync mainnet-policy genesis
checkpoint create checkpoints/policy-sync-mainnet -f

[cschuchardt88]

I have done basic testing... but maybe someone that uses neo-express can test it better. Im to new to using. I normally use neo-cli for testing