Adding MathML Core support to rsx

[Ameyanagi]

This PR adds a MathML Core support to the rsx as discussed in issue #1778.

Deprecated tags and attributes are not included in the code base.
annotation-xml is aliased to annotationXml due to the naming restrictions of rsx macro.

@stefnotch @Jah-On

[Jah-On]

Looks good!

[ealmloff]

Thank you!

[stefnotch]

The semantics element doesn't accept an encoding, unless I misread the spec

[ealmloff]

It looks like it does:

• https://developer.mozilla.org/en-US/docs/Web/MathML/Element/semantics#encoding
  

[stefnotch]

Huh, interesting. The MathML Core spec seems to not mention it https://w3c.github.io/mathml-core/#semantics-and-presentation

[stefnotch]

Will we need a MathML equivalent of this?

dioxus/packages/html/src/global_attributes.rs

Line 1643 in 53727b3

trait_methods! {

The MathML core spec specifies a few global attributes.

[ealmloff]

Will we need a MathML equivalent of this?

dioxus/packages/html/src/global_attributes.rs

Line 1643 in 53727b3

trait_methods! {

The MathML core spec specifies a few global attributes.

Yes, we should also change

dioxus/packages/html/src/elements.rs

Line 148 in 53727b3

impl SvgAttributes for $name {}

To apply svg global attributes only to the svg namespace instead of every namespaced element

[Ameyanagi]

@stefnotch @ealmloff
I will try to add the global attributes.