HdyDialer: deprecate objects related to dialer

HdyDialerButton, HdyDialerCycleButton and HdyDialer objects where not
deprecated, only there methodes were.
7 jobs for dialer_obj in 11 minutes and 44 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build
passed #227693
librem5
build-debian-clang

00:03:55

passed #227691
librem5
build-debian-gcc

00:02:45

passed #227692
librem5
build-debian-gcc-static

00:02:40

passed #227694
librem5
build-fedora-gcc

00:02:44

 
  Docs
passed #227695
librem5
build-gtkdoc

00:02:07

 
  Test
passed #227696
librem5
unit-test

00:02:02

44.9%
 
  Package
passed #227697
librem5
package-debian

00:02:02