[docs] additional code examples for 12 rules

[Shinigami92]

PR checklist

• Addresses an existing issue: [docs] [proposal] Expand rule metadata to include code examples #3601
• New feature, bugfix, or enhancement
  • Includes tests
• Documentation update

Overview of change:

Added code examples to rules:

• noAny
• noEmptyInterface
• noSparseArrays
• noUnnecessaryCallbackWrapper
• objectLiteralSortKeys
• oneVariablePerDeclaration
• onlyArrowFunctions
• preferTemplate
• radix
• switchDefault
• typedef
• useIsnan

CHANGELOG.md entry:

See: "Overview of change"

[palantirtech]

Thanks for your interest in palantir/tslint, @Shinigami92! Before we can accept your pull request, you need to sign our contributor license agreement - just visit https://cla.palantir.com/ and follow the instructions. Once you sign, I'll automatically update this pull request.

[Shinigami92]

@palantitrech Sorry, but currently I am not allowed to sign the CLA.
I want to and will do this in the next few days / weeks.
Currently, the organization I work for joins an OSB alliance and I have to wait :/

After signing the CLA, I am very interested in supporting this project even more!

[suchanlee]

@Shinigami92 is the CLA signed? would love to merge this!

[Shinigami92]

@suchanlee sorry but I want this too and also work on tslint
But I have to wait at my business :(
My boss said that it is in final stage and i'm hoping and praying that it's next week
This week i'm in holiday

[suchanlee]

ah okay sounds good, just let us know!

[Shinigami92]

Finally I could accept the CLA

[Shinigami92]

AFAICT everything is now ready for review and merge.
Shall I change the dates in each src/rules/code-examples/* on line 3 or are they good as is?

[johnwiseheart]

Hi! Sorry that this has been left for a while. Please update the dates of the copyrights, and then we can merge this in.

[Shinigami92]

I think in src/rules/classNameRule.ts an import line was added
that caused the conflict

For now I dont have time anymore, I can look into it in maybe 10h

[Shinigami92]

@johnwiseheart anything needed before review?

[johnwiseheart]

Looks good to me. Can you confirm whether you have signed the CLA? The cla bot seems to be a little funky right now.

[Shinigami92]

yes I have

[johnwiseheart]

Sweet, let me look into why its not reporting properly and I'll merge it in once it passes.

[Shinigami92]

yay it passed

[johnwiseheart]

Thanks for your contribution!

[Shinigami92]

I will look into some more code examples in the next few days
and then do this in a new pr