Add additional Logging level functions to the logging module

[DJawna]

This PR will add Log prioriyt dependent logging functions:

• log_*

where * is: create, warning, error etc.

In addition to the message those new functions will take the Category as paraemter,
the Category needs to be converted to c_int, if that fails, Application value is taken and assumed it will be convertible to c_int.

[Cobrand]

Thanks, I will have a look once you fix my comment. Also don't forget to run cargo fmt, I'm pretty sure it fails your PR as-is.

[Cobrand]

The closure thing is very messy, just use Priority and pattern matching to figure out which function to call, don't use closures like that, it's quite hard to read for very little gain.

[DJawna]

The closure thing is very messy, just use Priority and pattern matching to figure out which function to call, don't use closures like that, it's quite hard to read for very little gain.

Now i have replaced all those function wrappers with the closures in them with just one single pub function which accepts the priority enum and matches it to invoke the unsafe sdl log functions

[Cobrand]

Much better. I think you can still add log_debug log_critical etc that are just calls to log_with_category inside for simplicity.

[DJawna]

Much better. I think you can still add log_debug log_critical etc that are just calls to log_with_category inside for simplicity.

Ok did that now!