[DNM][WIP][do not review yet]Service and Device initialization: automatic priorities

[tbursztyka]

DO NOT REVIEW YET (I just need to see first what CI will find out, my potato PC cannot run the whole test suites)

This is a fix for #76937 after discussing on the RFC #73836

I applied most comments made during these discussion.

• Keeping current macros unchanged and able to live with the new ones
• Adding new macros: both for device and service (not init, SYS_INIT() will be deprecated as well anyway). Taking the opportunity to reduce the number of macros. Basically merging DT/non-DT based macros, so removing manually introduced device name. This is a legacy thing that needs to disappear. Explicit device name is coming from the time DTS was not used, and during the process of switching to DTS we had to keep it. Now it's not true anymore. The new macros still can instantiate a non-DT device, but it will take the unique token as a name and that's it.
• Declaring the explicit dependency resolution file to cmake via cmake functions and not by looking up on pre-determined places (only on the application side, I could not use such cmake function, so there it has to be a specific file, unless I misunderstood something with the build process)
• The new service API is extremely minimal as it is meant to just replace SYS_INIT where relevant (like, say: net_init, and not all the places where SYS_INIT should not have been used). BUT: it will grow, there are plenty of rooms for improvements. We could start/stop/pause a service if needed, etc etc...

Added to this I (tried to) switch most device macro calls to new ones. Which make this PR a huge one in files touched and modified lines. There are few corner cases which prevent changes: PTP and ethernet's DSA. These needs to switch to DTS.

Last but not least: brace for impact /o\

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