MethodSignatureSniffs: Add included and exluded patters

[RiKap]

Hey.
I added includedMethodPatterns and excludedMethodPatterns property for RequireSingleLineMethodSignatureSniff and RequireMultiLineMethodSignatureSniff

includedMethodPatterns:
It will allow you to set methods which you would like to check by these two sniffs

excludedMethodPatterns:
It will allow you to set methods which you would like to ignore by these two sniffs

---

Sometimes it is good to enforce RequireMultiLineMethodSignatureSniff just for one method, for example __construct.

Another benefit of this change is that you are able to use these two sniffs together.
It will force RequireMultiLineMethodSignature for __construct and RequireSignleLineMethodSignature for all other methods.

<rule ref="SlevomatCodingStandard.Classes.RequireMultiLineMethodSignature">
	<properties>
		<property name="minLineLength" type="int" value="0"/>
		<property name="includedMethodPatterns" type="array" value="
			/__construct(.*)/,
		"/>
	</properties>
</rule>
<rule ref="SlevomatCodingStandard.Classes.RequireSignleLineMethodSignature">
	<properties>
		<property name="minLineLength" type="int" value="0"/>
		<property name="excludedMethodPatterns" type="array" value="
			/__construct(.*)/,
		"/>
	</properties>
</rule>

There is no BC break. If you don't set excludedMethodPatterns and includedMethodPatterns it will works as before.

[kukulich]

Thanks, nice addition.

I've requested some changes. All requests are valid for more commits :)

Please use rebase and fix errors in the right commits.

[kukulich]

Please document how it works when you set both options together.

[kukulich]

1. Please remove the commit with readme and change readme in previous four commits when you add relevant option.

2. Please update all patterns in tests. /__construct(.*)/ does not make sense now.

[RiKap]

@kukulich
2. Why it does not make sense now, but it did before?

[kukulich]

Now you check only method names.

[kukulich]

Thanks.