added timeout in luisRecognizer & qnaMaker for node

[Zerryth]

Part 1 of 2 PRs to fix microsoft/botframework-sdk#5196

Description

• Added timeout option (in milliseconds) in LuisRecognizer and QnAMaker - Node
• As in C# HttpClient, set timeout default to 100000 milliseconds

Specific Changes

LuisRecognizer

• LuisPredictionOptions now extends ms-rest-js's PredictionResolveOptionalParams, whose parent (RequestOptionsBase interface) has optional timeout property

QnAMaker

• QnAMakerOptions now has optional timeout
• QnAMaker class constructor now sets timeout option in _options
• queryQnaService() method passes timeout option into request() made to the QnA cognitive service

[coveralls]

Pull Request Test Coverage Report for Build #2168

• 2 of 2 (100.0%) changed or added relevant lines in 1 file are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.05%) to 87.592%

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Files with Coverage Reduction	New Missed Lines	%
libraries/botframework-config/src/botConfigurationBase.ts	2	85.59%

Totals
Change from base Build #2160:	-0.05%
Covered Lines:	3192
Relevant Lines:	3501

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💛 - Coveralls

[Zerryth]

@stevengum @daveta

Update:

• dotnet PR merged
• pending node PR review still