Plugin adding new type of job

[Adam Tulejko]

Hi,

I want to create plugin that:
- adds new job type containing some custom form fields visible during new item configuration,
- after clicking 'Save' it dumps configuration to JSON file that will be used by my custom package builder during build.

I've browsed plugins carefully and haven't found anything that would do things mentioned above, but I want to be sure before writing my own plugin.

Adam Tulejko