Keystore: EC_CURVE tag added import agruments

As per Keymint documentation EC key import has to provide EC_CURVE tag.
This is required for Strongbox implementation test using wycheproof test
cases.

Also added a support to get KEY_SIZE based on EC_CURVE, if it is not
included into Authorization list.

Bug: 237634216
Test: run cts -m CtsKeystoreWycheproofTestCases
Change-Id: Ie981721c38477e74da3cba6613dc0b34e453609c