New Code Action -- Convert "\n" "\r" "\r\n" literal to Environment.NewLine

Assume using System
In progress of code issue "Redundant Overrided Method"

Remaining works:
1. Adding action script
2. test cases
Modified CodeAction ConvertToNewLine recording to Michael's comments

1. Add namespace System before Envrionment.NewLine
New Code Issue "Redundant Overrided Methods"
New Code Action Copy Comments from Base

Currently it supports to copy documented comments from base/interface
to overrided method.
New Code Issue "Redundant base. qualifier"

Redundant base. qualifier is detected and removed.
New Code Issue "Redundant empty default branch in switch"

"Redundant empty default branch in switch" is detected and removed
Deleted unused files
New Code Issue "Redundant Explicit type specification in lambda expression"

"Redundant Explicit type specification in lambda expression" is
detected and removed.
New Code Issue "Replace with Is operator"

Operator ‘is’ can be used instead of comparing object GetType() and
instances of System.Type object.
Correct typo
Modifications to "replace with is operator"
partial for new code issue -- convert type to static
New codeissue Convert to static type
corretced typo
New code Issue "Override virtual methods"

Override virtual methods in the directed base type.
Reformat ConvertToNewLineTest.cs
Delete useless code
Code Formatting for RedundantBaseIssue
Code formatting for RedundantExplicitTypeSpecificationInLambdaIssue