Make generated code mostly style compliant

[AThousandShips]

Follow-up to:

• Fix some style details in generation #1423

This makes running clang-format on the generated files change almost nothing, the only things this does not do correctly is:

• Align continuations in class_db_singleton.hpp, which would be a lot of extra code to make work correctly
• Some cases with public: followed immediately by private: should have no empty line (or no public: in the first place), this could be fixed but only occurs in one place, so leaving it be for right now and not adding any complicating code for it

[dsnopek]

Thanks!

I diffed the gen/ directory from before and after this PR, and skimmed the result. For the most part, it looks really great!

I did notice one odd change:

-       return internal::_call_builtin_operator_ptr<int8_t>(_method_bindings.operator_not, (GDExtensionConstTypePtr)&opaque, (GDExtensionConstTypePtr)nullptr);
+       return internal::_call_builtin_operator_ptr<int8_t>(_method_bindings.operator_not, (GDExtensionConstTypePtr)&opaque, (GDExtensionConstTypePtr) nullptr);

It's adding a space before nullptr for some reason.

[AThousandShips]

Will take a look, realized there were some potentially breaking things so will check first, making draft atm

[AThousandShips]

It's adding a space before nullptr for some reason.

This is intentional, it's compliant with clang-format

Fixed the error, will take a look over it again to make sure I didn't break anything and push soon, and adding some further improvements

[AThousandShips]

Will see if I can adjust some minor issues, like empty public: blocks, and the alignment of continuations, but now it generates correctly

To confirm this doesn't break things do:

git checkout master
scons generate_bindings=Yes build_library=No
clang-format -i gen/include/godot_cpp/classes/*.hpp gen/include/godot_cpp/variant/*.hpp gen/src/classes/*.hpp gen/src/variant/*.cpp 
git add -f gen/*

then checkout this, run

scons generate_bindings=Yes build_library=No

And compare the diffs, it should now just be minor style differences, and no lost code (accidentally removed some private: cases before

[dsnopek]

Sorry for taking so long to come back this!

It's adding a space before nullptr for some reason.

This is intentional, it's compliant with clang-format

Ah, ok, I didn't know that.

I skimmed through the diff between the code generated before and after the latest version of this PR, and I didn't spot any issues, although, it is a very long diff. :-)

So, this looks good to me, but I think I'll hold off on actually merging it until after Godot 4.3-stable is released, just in case.

[dsnopek]

Cherry-picked for 4.2 in PR #1570

[dsnopek]

This one won't cleanly cherry-pick to the 4.1 branch - I think it'd need a custom PR for it. However, given that 4.3 is the current stable now, I'm not entirely sure it makes sense to put in the effort. But we still need to decide on the support plan for older versions in general, so I'm going to leave the cherrypick:4.1 label in place for now.