Moved SDKHelpers to src/Splunk.Client.Helpers

This is as discussed with Liying.
Refactored Resource class is a DynamicObject that has dynamic properties and/or a collection of Resources
Added missing property to the refactored Resource class
Dynamic Refactored.Resource class update

Enhanced unit tests, updated documentation, updated contracts, and added
NotSupportedException: Case insensitive language bindings are not
supported.
Checkpoint

We now have dynamic Resource, Entity, and EntityCollection classes.
Tightened up unit tests and our new extensibility points: Entity, EntityCollection, and Resource
Checkpoint

Refactored Application, ApplicationCollection, Configuration,
ConfigurationCollection, and ConfigurationStanza (not quite done),
Receiver, and Server
Checkpoint

A few corrections and some temporary test exclusions
Checkpoint

More classes brought into the refactoring. For better separation of
concerns we now have
* Resource
* Endpoint
* ResourceEndpoint
An Endpoint that aggregates a Resource
** Entity
** EntityCollection
For testability we now have
* IEntity
Defines the operational interface common to all entites
* IEntityCollection
Defines the operational interface common to all entity collections
* IResource
Defines the operational (data) interface common to all resources.
Checkpoint

Corrections. More to come.
Checkpoint

Refactored code now compiles
AtomEntry/AtomFeed bug fix : we are now correctly returning read-only collections/dictionaries

Also tweaked Resources class and improved its unit test.
Bug fixes + improved tests
Bug fixes + improved tests
TestResource improvements

All TestResource tests pass.
Checpoint

Application, ApplicationCollection, Configuration,
ConfigurationCollection, ConfigurationSetting, and ConfigurationStanza,
Server, Service, and Transmitter are looking pretty good. On to unit
testing.
Checkpoint

Added AppplicationSetupInfo and ApplicationUpdateInfo to the fold. Work
remains, but everything compiles.
Checkpoint

Brought Index and IndexCollection partially into the fold. All compiles.
Interface development remains.
Checkpoint

Index and ExpandoAdapter improvements
Checkpoint

Corrected an oversight