feat(eslint-plugin): [space-infix-ops] Add support for Union and intersection of type declarations

[doumart]

Second PR so maybe i'm missing something. I added support for Union and Intersection of interface and type declarations.
There is the yarn.lock that was updated and don't understand why, i can remove it if it not support to be there

[typescript-eslint]

Thanks for the PR, @doumart!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

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[bradzacher]

I would just try reverting the changes to the lock file.
It looks like for some reason it has installed new versions.
So yeah - revert lock file, and re-install.

[doumart]

Will hopefully resolve #51

[codecov]

Codecov Report

Merging #3360 (a5524c2) into master (61e0353) will decrease coverage by 0.01%.
The diff coverage is 86.66%.

❗ Current head a5524c2 differs from pull request most recent head 63f5658. Consider uploading reports for the commit 63f5658 to get more accurate results

@@            Coverage Diff             @@
##           master    #3360      +/-   ##
==========================================
- Coverage   92.67%   92.65%   -0.02%     
==========================================
  Files         318      318              
  Lines       11109    11116       +7     
  Branches     3155     3157       +2     
==========================================
+ Hits        10295    10300       +5     
- Misses        362      363       +1     
- Partials      452      453       +1     

Flag	Coverage Δ
unittest	92.65% <86.66%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...ackages/eslint-plugin/src/rules/space-infix-ops.ts	90.90% <86.66%> (-6.53%)	⬇️
packages/typescript-estree/src/convert.ts	98.24% <0.00%> (-0.03%)	⬇️
packages/eslint-plugin/src/rules/dot-notation.ts	92.59% <0.00%> (ø)
packages/eslint-plugin/src/util/types.ts	82.25% <0.00%> (+1.07%)	⬆️

[bradzacher]

looking good so far! The logic looks sound. A few small comments.

Please add some negative tests for things like

const x: string&number;
class Test {
  value: string&number;
}
function foo<T extends string&number>() {}
function bar(): string&number {}

[bradzacher]

thanks for your contribution!

[simPod]

How can I disable this rule from adding a space to my union types? There seems to be no config for it. Thanks