feat: Add commonly used physics macros

[Leedehai]

Support commonly used macros from the $\LaTeX$ physics package. Demo.

ops.js ('yarn start' URL):

ops	explanation
\rank	rank of matrices
\Res	residue in complex analysis
\tr, \Tr, \trace	trace of matrices

macros.js ('yarn start' URL):

macros	explanation
\abs, \Abs	absolute value
\norm, \Norm	norm
\eval	vertical bar of evaluation limits for integrals
\vb, \vectorbold	vector, bold font
\vectorarrow	vector, with an arrow
\vectorunit	unit vector, with a hat
\dotproduct, \crossproduct	dot and cross product of vectors
\dd	differential
\gradient, \laplacian	gradient and laplacian for scalar fields
\divergence, \curl	divergence and curl for vector fields

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[Leedehai]

Hi maintainers, GitHub said I "need a maintainer to approve running workflows". 🙂

[codecov]

Codecov Report

Merging #3700 (de43acc) into main (176552a) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #3700      +/-   ##
==========================================
+ Coverage   92.97%   92.99%   +0.01%     
==========================================
  Files          91       91              
  Lines        6765     6781      +16     
  Branches     1571     1571              
==========================================
+ Hits         6290     6306      +16     
  Misses        437      437              
  Partials       38       38              

Impacted Files	Coverage Δ
src/functions/op.js	98.97% <ø> (ø)
src/macros.js	97.58% <100.00%> (+0.08%)	⬆️

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[Leedehai]

Ping reviewers... 🙂

[Leedehai]

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[Leedehai]

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[Leedehai]

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[Leedehai]

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[physicslog]

Any plan to add a derivative shortcut like in the physics package:\dv{f}{x} for $\frac{df}{dx}$?

[Leedehai]

Nope.. If anyone volunteers, feel free to fork this PR. :)