ci(): import benchmarks from website

[ShaMan123]

FIRST merge #8138, update from master and move to this PR.
If any conflict turns up ping me. In general the strategy should be theirs.
testem-patch...import-benchmarks2

Migrates benchmarks to /test/benchmarks built on top of fabric's tests using QUnit and testem

test by running the following cmd

npm test -- -s benchmarks -l --dev

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   82.09 |    74.56 |   84.41 |   80.68 |                                               
 fabric.js |   82.09 |    74.56 |   84.41 |   80.68 | ...,27458,27516,27526-27570,27678,27765,27969 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   82.12 |    74.56 |   84.41 |   80.73 |                                               
 fabric.js |   82.12 |    74.56 |   84.41 |   80.73 | ...,27458,27516,27526-27570,27678,27765,27969 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   82.08 |    74.52 |   84.41 |   80.67 |                                               
 fabric.js |   82.08 |    74.52 |   84.41 |   80.67 | ...,27458,27516,27526-27570,27678,27765,27969 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   82.09 |    74.56 |   84.41 |   80.68 |                                               
 fabric.js |   82.09 |    74.56 |   84.41 |   80.68 | ...,27458,27516,27526-27570,27678,27765,27969 
-----------|---------|----------|---------|---------|-----------------------------------------------

[github-actions]

Code Coverage Summary

> [email protected] coverage:report
> nyc report --reporter=lcov --reporter=text

-----------|---------|----------|---------|---------|-----------------------------------------------
File       | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s                             
-----------|---------|----------|---------|---------|-----------------------------------------------
All files  |   82.09 |    74.56 |   84.41 |   80.68 |                                               
 fabric.js |   82.09 |    74.56 |   84.41 |   80.68 | ...,27458,27516,27526-27570,27678,27765,27969 
-----------|---------|----------|---------|---------|-----------------------------------------------

[asturur]

we don't need this.

[ShaMan123]

Alright

[github-actions]

Coverage after merging import-benchmarks2 into master will be

80.74%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
dist
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