Always trim '?' from the start of SAS tokens

[MattMcL4475]

Azure Storage Explorer includes the '?' at the beginning of a SAS token.
Azure Portal does NOT include the '?'.

Throughput the CoA and TES code, the system shall always TrimStart('?') of SAS tokens, in case they are included, to avoid "??" double quotation issues, which can lead to inconsistent and difficult to find bugs.

This bug is to add the equivalent of TrimStart('?') to every area in the entire code base that uses SAS tokens and/or refactor all of uses of a SAS token to a single utility library that does it.