[KeyVault] - Address various architecture feedback

[maorleger]

What

• KeyVaultBackupClient constructor: pipelineOptions -> options
• CryptographyClient: keyId -> keyID
• createKeyOptions: +hsm

Why

As part of pre-GA architecture feedback with @chradek we discovered a few things that we would want to address
before we GA the KeyVault packages in May. This PR is meant to collect all the various items and keep track of what
was changed.

[maorleger]

APIView links:

Keys: https://apiview.dev/Assemblies/Review/00523582d8434db8a0b8c31319db2dcb
Admin: https://apiview.dev/Assemblies/Review/02e78f8ab65a4f8287904c735737704b
Certificates: https://apiview.dev/Assemblies/Review/4f3e769a37144f14abd59e4c82221e62
Secrets: https://apiview.dev/Assemblies/Review/dfce0e88f7e84bd19a223b01cfa87592

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[maorleger]

@chradek @sadasant mind reviewing this PR when you get a chance?

[chradek]

Overall looks good. Just a minor nit.

[chradek]

It makes me a little sad that this is keyID instead of keyId, but it does make it consistent with the rest of the interfaces in this package (if inconsistent with the rest of the keyvault packages)