feedback-manager: Make 'connect_feedback' specific to buttons

Those have 'clicked' and 'released' signals.
14 jobs for fixup-507 in 17 minutes and 10 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #269904
librem5
build:native-alpinelinux-edge

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passed #269903
librem5
build:native-debian-bullseye

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passed #269902
librem5
build:native-debian-buster

00:03:44

 
  Test
passed #269907
librem5
check-po

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passed #269909
librem5
test:smoke:one-output

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passed #269910
librem5
test:smoke:two-outputs

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passed #269908
librem5
unit-test:native-alpinelinux-edge

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passed #269906
librem5
unit-test:native-debian-bullseye

00:02:44

passed #269905
librem5
unit-test:native-debian-buster

00:02:39

14.6%
 
  Package
passed #269911
librem5
package:deb-debian-buster

00:03:36

passed #269912
librem5:arm64
package:deb-debian-buster:arm64

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passed #269913
librem5
package:deb-pureos-amber

00:03:47

 
  Test Package
passed #269914
librem5
autopkgtest-debian-buster-package

00:01:29

passed #269915
librem5
lintian-debian-buster-package

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