surge-fx: split ParameterPanel into its own component

[shih1]

Surge-fx has a generic editor layout for each fx. This means that the GraphicEQ and the Reverb have the same UI.

In preparation to create more specific UI's for each FX, this PR is a mostly a code reorg but some other changes are being shipped with

• Remove StyleConsumer - realized that its actually not needed
• add accessibleOrderWeakRefs to the ParameterPanel and addAndMakeVisibleRecordOrder() back. This should have been maintained for accessibility. I do think these functions & dataStruct should belong in a separate class but... is outside the scope of this PR.

The primary motivation is a simplification of Editor::resized() (in the spirit of keeping the original layout, its not exactly like this but the logic flow is as described)

void SurgefxAudioProcessorEditor::resized()
{
    auto bounds = getLocalBounds();
[...]
    auto topArea = bounds.removeFromTop(topAreaHeight);
    auto bottomArea = bounds.removeFromBottom(bottomAreaHeight);

    picker->setBounds(topArea);
    defaultKnobLayout->setBounds(bounds); 
    fxNameLabel->setBounds(bottomArea);
}

This will make it easier to switch between ParameterPanel and customLayout later.

[mkruselj]

@shih1 Looks like we're missing files to be clang-formatted over here.

[shih1]

@shih1 Looks like we're missing files to be clang-formatted over here.

i was missing a new line at the end of my new *.cpp file. my linter doesn't fix that but it should be resolved now .

hm there were also other things but it should be fixed now.

[mkruselj]

@baconpaul Are we good to merge this?