Local development setup, custom logging, resolve channel name and username functions

[AdarshNaidu]

This PR adds the following functions which will be used throughout the skill.

• Local development setup: This allows the developer to run the logic (backend code) of the skill locally without having to upload the code to aws lambda function. Thus allowing faster development.

• Custom Logging function: Displays logs to an external site which the developer can specify.

• Resolve Channel names function: This function takes in a string as an input and returns an array of channel/group names which the user has joined and are similar to the input string

• Resolve Usernames function: this function takes a string an an input and returns an array of usernames which the user is in contact with and is similar to the input string

[TheDreamSaver]

This custom logging feature can be included in a local development setup environment instead of the main code.

[AdarshNaidu]

This custom logging feature can be included in a local development setup environment instead of the main code.

This will prevent the logs to show up when the skill will be hosted as a lambda function.
I think it can be removed completely after beta testing is finished.

[TheDreamSaver]

Is this single best username or channel feature expected to vary per intent or this is like a global feature?

If it is global move the setting to the config file instead and use it from there.

[TheDreamSaver]

Move the changes to the config file only.
No need for an additional file. The config is supposed to serve all the global configurations.