Update CognitiveService ComputerVision Swagger for new extensions (#1)

* Merged PR 17875: Add new languages

Add new languages

Also tidy up the enum definition so that AutoRest generates C# that actually compiles

* Merged PR 17942: Replace fancy quotes with plain single quotes

Make javac compile without complaint even without setting the codepage to utf-8 by dropping the gratuitous typographic quotes.

* Merged PR 17956: Rename url argument for overloaded endpoint to imageUrl

This name will become the name of the argument in Python.  Since you can used named arguments in Python, give them less ambiguous names.

* Changes to make --azure-validator run more cleanly

Errors Fixed
* XmsExamplesRequired/D5001/Documentation (7)
* XmsPathsMustOverloadPaths/R2058/SDKViolation (7)

Errors Ignored
* SecurityDefinitionsStructure/R2054/SDKViolation (1) - API Key scheme for Cognitive Services
* APIVersionPattern/R3012/ARMViolation (1) - Keeping with the Cognitive Services numbering scheme
* OperationsAPIImplementation/R3023/ARMViolation (1) - Not sure what this is

Warnings Fixed
* XmsEnumValidation/R2018/SDKViolation (1)
* DescriptionAndTitleMissing/R4000/SDKViolation (1)

Warnings Ignored
* DescriptionAndTitleMissing/R4000/SDKViolation (35) - description is contained in #ref
* EnumInsteadOfBoolean/R3018/ARMViolation (5) - fix would be a breaking change
* ListInOperationName/R1003/SDKViolation (1) - fix would be a breaking change
* LongRunningOperationsWithLongRunningExtension/R2007/SDKViolation (2) - endpoint will not ultimately yield a 200, as this extension would require
* NonApplicationJsonType/R2004/ARMViolation (15) - fix would be breaking change
* PageableOperation/R2029/SDKViolation (1) - not actually pageable
* ParameterNotDefinedInGlobalParameters/R2015/SDKViolation (1) - All our own parameters specify x-ms-parameter-location
* PostOperationIdContainsUrlVerb/R2066/SDKViolation (7) - fix would be breaking change

ComputerVision - collection of fixes

* fix ocr language parameter to fix [bug](Azure/azure-sdk-for-net#4083)
* language parameter missing for /tag path
* language parameter missing for /models/*/analyze path
* make /models/*/analyze return a more generic type
* add specific types for /models/*/analyze to return for current models

Add Spanish as an option as ServiceLanguage for ComputerVision.

…Service ComputerVision API to V2 (#2747)

* Generated from c2567da015994dac3301f495b6c5011d28ceaffe

Add post-processing directive to swap argument order for RecognizeText to position the url argument ahead of the mode argument.

autorest does not generate the intended order, so we add a post-processing directive,
for each target language,

* Generated from 973322cfd6ec2ced60a732f53b5318ceded5de7b

Fix validation errors

* Generated from 70efe042d607cbd973734e432da395ed35191a03

Add Spanish support for ServiceLanguage

This is for parity with V1.

ComputerVision add tag.hint

Hints provided additional info for whole-image analysis tags.
This PR is to make the Swagger match the service behavior.