feat(eslint-plugin): [no-explicit-any] ignoreRestArgs

[Dilatorily]

Closes #397

[codecov]

Codecov Report

Merging #548 into master will increase coverage by 0.06%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #548      +/-   ##
==========================================
+ Coverage   94.19%   94.26%   +0.06%     
==========================================
  Files         105      104       -1     
  Lines        4323     4252      -71     
  Branches     1185     1160      -25     
==========================================
- Hits         4072     4008      -64     
+ Misses        146      142       -4     
+ Partials      105      102       -3

Impacted Files	Coverage Δ
...ackages/eslint-plugin/src/rules/no-explicit-any.ts	100% <100%> (ø)	⬆️
...s/experimental-utils/src/eslint-utils/deepMerge.ts	88.23% <0%> (-5.1%)	⬇️
...-plugin/src/rules/explicit-function-return-type.ts	97.29% <0%> (-2.71%)	⬇️
packages/eslint-plugin/src/rules/index.ts	100% <0%> (ø)	⬆️
...experimental-utils/src/eslint-utils/RuleCreator.ts	0% <0%> (ø)	⬆️
packages/typescript-estree/src/convert-comments.ts	96% <0%> (ø)	⬆️
packages/experimental-utils/src/index.ts	0% <0%> (ø)	⬆️
...ges/experimental-utils/src/ts-eslint/RuleTester.ts	0% <0%> (ø)	⬆️
...es/eslint-plugin/src/rules/no-floating-promises.ts
...-plugin/src/rules/no-unnecessary-type-assertion.ts	91.17% <0%> (+0.38%)	⬆️
... and 2 more

[bradzacher]

Thanks for your contribution!

A few things for you:

1. you need to add support for more cases of function definitions:

function foo1(...args: any[]) {}
const bar1 = function (...args: any[]) {}
const baz1 = (...args: any[]) => {}

// readonly array[]:
function foo2(...args: readonly any[]) {}
const bar2 = function (...args: readonly any[]) {}
const baz2 = (...args: readonly any[]) => {}

// generics
function foo3(...args: Array<any>) {}
const bar3 = function (...args: Array<any>) {}
const baz3 = (...args: Array<any>) => {}
function foo4(...args: ReadonlyArray<any>) {}
const bar4 = function (...args: ReadonlyArray<any>) {}
const baz4 = (...args: ReadonlyArray<any>) => {}

should these be valid as well? Technically they're valid typescript, but they make less sense semantically. Probably good to guard against them.

function foo5(...args: any) {}
const bar5 = function (...args: any) {}
const baz5 = (...args: any) => {}

3. Please add examples to the docs to help explain the option's function

[bradzacher]

LGTM