Fixes #4683
Fixes #4712
Fixes #4713
Fixes #4714
Fixes #4131

Description

This PR introduces the following types:

1. Use the SdkTypeKinds from TCGC as our kind for all input types (you should see related changes in the emitter and the generator)
   1. Related: since the kind is now from TCGC, the "encode" information is no longer bundled with the kind like we used to have such as DateTimeISO8601. This part fixes Duplicate information in our input type and serialization system #4131
2. Move datetime type and duration type out of InputPrimitiveType to align current design of TCGC. This part fixes DateTime and Duration are standalone types in TCGC #4713
3. Remove InputIntrinsicType. Only unknown is meaningful to us and in TCGC it is a built-in type with the kind of any. Issue has been open for them to rename this to unknown. This part fixes Intrinsic types are not meaningful except unknown #4712
4. Unify property names in enum type (EnumValueType => ValueType, AllowedValues => Values), minor change.
5. ValueType (formal EnumValueType) is now a InputPrimitiveType instead of just a string.

Checklist

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