Description
We should standardise the number of blank newlines that are allowed around things.
For example, with Python we have PEP8 which says:
Surround top-level function and class definitions with two blank lines.
Method definitions inside a class are surrounded by a single blank line.
Extra blank lines may be used (sparingly) to separate groups of related functions. Blank lines may be omitted between a bunch of related one-liners (e.g. a set of dummy implementations).
Use blank lines in functions, sparingly, to indicate logical sections.
Functionally, this means that code formatters add newlines where needed and collapse newlines where there are too many. I think that Ruff formatter adds 2 newlines after def and class and allows a maximum of 2 newlines between arbitrary code, for example.