Add vendor picture parameters

Add setVendorPictureParameters method to store vendor parameters in the
picture parameters. So that vendor can define their own parameters
without changing too much framework code.

Bug: 393450022
Flag: android.media.tv.flags.media_quality_fw_bugfix
Test: atest CtsMediaQualityTestCases
Change-Id: I4446bb36dd0656cf5831fdde53e6d998d82eef6e