[Partial fix for #1372]Added SimpleTypesExcludeFilter to exlcude validat...

...ion on simple types and also added tests to cover scenarios.

@yishaigalatzer @pranavkm @rynowak @harshgMSFT 

Note:
- This PR does not have comments. I will add them once we agree upon the changes.
leave a comment here that this is specifically to handle things like IDictionary<...> and IReadOnlyDictionary<...>. Make sure to document why this bit of code needs to be here.