[lldb][AArch64] Add tests for SME's SVE register state to TestArm64DynamicRegsets

SME reuses SVE's register state but adds new modes to it. Therefore
we can't check all those in the same test as the existing SVE
checks.

SME's ZA, SVG and SVCR register checks will be added to this test
in later patches.

Prior to this we didn't have any testing of writing streaming mode
SVE registers from lldb, only writing SVE registers in normal
(non-streaming) SVE mode.

Reviewed By: omjavaid

Differential Revision: https://reviews.llvm.org/D157846