Merge | SqlCommand Public Methods (#3655)

* Public ctors

* Merge Clone and Clone ctor

* Merge ResetCommandTimeout

* Merge Cancel

# Conflicts:
#	src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/SqlCommand.netfx.cs

* Merge CreateParameter

* Merge CreateDbParameter

* Merge Dispose

* Merge RegisterColumnEncryptionKeyStoreProvidersOnCommand

* Remove dead method GetSqlParameterWithQueryText

* Merge OnDoneDescribeParameterEncryptionProc

* Merge OnDoneProc

* Merge OnDone

* Revert rename of PrepareInternal to InternalPrepare

* Merge OnReturnStatus

* Merge OnReturnValue

* It was always in netfx ... whoops

Author: benrr101