DEV-9254 remove dataclassY

[Boris-Filin]

Description

We remove the dataclassy from the SDK, migrating to using the actual Python dataclass decorator. (Note: The library has not been physically removed yet as some of the downstream repos rely on it. But it is no longer used anywhere in the SDK). This is motivated by lack of ongoing support for dataclassy, as well as no-one on the team wanting to deal with its mess of magic code.

• Since the CIM classes rely on overwriting inits and have quite a few custom properties, default dataclass inits still cannot be used. A class DataclassBase was implemented to manually implement dataclass-like field initialisation.
• Every class is now decorated with @zb_dataclass - a normal dataclass decorator with some of its defaults changed (eg slots=True)
• Eq and Hash are now implemented in Identifiable and are based on the mrid
• Str and Repr are also now in Identifiable
• (QoL readability) now every abstract class (non-leaf in the hierarchy) is marked with metaclass=ABCMeta. This makes zero difference programmatically, but makes it clearer which part of the model you are in.
• "Optimise imports" in PyCharm was ran on most of the files in the SDK to clean up residual imports from dataclassy, so import structures might be slightly changed. They should now be closer to PEP.

The changes and reasoning are described a lot more verbosely in src/zepben/ewb/dataclass_descriptors/MANIFESTO.md.

Associated tasks

No prerequisites.

Note that the code in this PR heavily anticipates the incoming nullable list change. Specifically, the BackedDescriptor class is currently only used in one place, but will be integral soon. Also, custom inits look a bit bulky with *args and **kwargs forwarding, but they will all be removed soon.

Test Steps

Run the test suite with the new tests; Ideally load a real model to make sure no side-effeects slipped through the cracks.

Checklist

If any of these are not applicable, strikethrough the line ~like this~. Do not delete it!. Let the reviewer decide if you should have done it.

Code

• I have performed a self review of my own code (including checking issues raised when creating the PR).
• I have added/updated unit tests for these changes, and if not I have explained why they are not necessary.
• I have commented my code in any hard-to-understand or hacky areas.
• I have handled all new warnings generated by the compiler or IDE.
• I have rebased onto the target branch (usually main).

Security

When developing applications, use following guidelines for information security considerations:
* Access to applications should be protected with security keys/tokens or usernames and passwords;
* All sessions are encrypted if possible;
* All application input is sanitised before being acted on (ie SQL statements, etc);
* Log messages, and especially client-facing ones, must be handled securely and must not leak credentials information (internal URLs, passwords, tokens).

• I have considered if this change impacts information security and made sure those impacts are handled.

Documentation

• I have updated the changelog.
• I have updated any documentation required for these changes.

Breaking Changes

• I have considered if this is a breaking change and will communicate it with other team members by posting it on the Slack breaking-changes channel.

The internals of classes have changed, potentially leading to unknown side-effects (tests all pass). More importantly, You can no longer use positional arguments except for mrid (MyClass("mrid", 42) bad, MyClass("mrid", thing=42) good).

[ryanjcoleman]

Task linked: DEV-9254 Remove dataclassy from Python SDK

[chestm007]

I've had a quick look - looks good from what ive got through. Github is a flaming pile of... yeah... and is dying trying to render this PR. theres a few nit pick formatting issues, ie newlines, missing line at EOF, and all not being at the top of the file, all pretty minor, but need to be fixed. I'll pull locally and review on anything that isnt github.

[charlta]

Converted to draft while formatting fixes are put in place

[Boris-Filin]

Reset to Max's formatting changes. Allegedly inline with all of the required standards

[chestm007]

looks good

[chestm007]

theres some minor formatting issues (3 lines between classes) - I'm not worried, ill adjust the linter to fix those once this goes in.

IMO, just change the type of exception thrown 👇🏿

and merge it in, adios dataclassy, good riddance!

[charlta]

Converted to draft until requested changes are fixed

Changes have been made