Add call composer Extras for enriched calling

Test: unit test; cts
Bug: 173437870

Change-Id: I2af39eea48737df1bf629caea5b617736635f2aa
Merged-In: I2af39eea48737df1bf629caea5b617736635f2aa
(cherry picked from commit 36b3dbc3abc879979626ad62c275206736a2da64)
2 files changed