Add bluetooth related timeouts adapter methods

In preparation for a multi-hfp change (and to resolve some merge
conflicts), add timeouts adapter methods in a separate file

Test: it builds
Change-Id: I3d0d99aad369e68ac29c54201cdb96e3a2cd4d22
Merged-In: I3d0d99aad369e68ac29c54201cdb96e3a2cd4d22