add badges to README.md (#128)

* add badges to README.md

* add discourse link to its badge

* improve discourse badge

* make tox version change into a oneliner

README.md

@@ -1,7 +1,8 @@
 # Alertmanager Operator (k8s)
-[![Alertmanager](https://charmhub.io/alertmanager-k8s/badge.svg)](https://charmhub.io/alertmanager-k8s)
-[![Test Suite](https://github.com/canonical/alertmanager-k8s-operator/actions/workflows/release-edge.yaml/badge.svg)](https://github.com/canonical/alertmanager-k8s-operator/actions/workflows/release-edge.yaml)
-![Discourse status](https://img.shields.io/discourse/status?server=https%3A%2F%2Fdiscourse.charmhub.io&style=flat)
+[![Charmhub Badge](https://charmhub.io/alertmanager-k8s/badge.svg)](https://charmhub.io/alertmanager-k8s)
+[![Release Edge](https://github.com/canonical/alertmanager-k8s-operator/actions/workflows/release-edge.yaml/badge.svg)](https://github.com/canonical/alertmanager-k8s-operator/actions/workflows/release-edge.yaml)
+[![Release Libraries](https://github.com/canonical/alertmanager-k8s-operator/actions/workflows/release-libs.yaml/badge.svg)](https://github.com/canonical/alertmanager-k8s-operator/actions/workflows/release-libs.yaml)
+[![Discourse Status](https://img.shields.io/discourse/status?server=https%3A%2F%2Fdiscourse.charmhub.io&style=flat&label=CharmHub%20Discourse)](https://discourse.charmhub.io)
 
 [Charmed Alertmanager (alertmanager-k8s)][Alertmanager operator] is a charm for
 [Alertmanager].

tox.ini

@@ -75,10 +75,7 @@ deps =
 commands =
     charm: mypy {[vars]src_path} {posargs}
     lib: mypy --python-version 3.5 {[vars]lib_path} {posargs}
-    lib: /usr/bin/env sh -c 'for m in $(git diff main --name-only {[vars]lib_path}); do \
-    lib:    if ! git diff $m | grep -q "+LIBPATCH\|+LIBAPI"; then \
-    lib:        echo "You forgot to bump the version on $m!"; exit 1; \
-    lib:    fi; done'
+    lib: /usr/bin/env sh -c 'for m in $(git diff main --name-only {[vars]lib_path}); do if ! git diff main $m | grep -q "+LIBPATCH\|+LIBAPI"; then echo "You forgot to bump the version on $m!"; exit 1; fi; done'
     unit: mypy {[vars]tst_path}/unit {posargs}
     integration: mypy {[vars]tst_path}/integration {posargs}
 allowlist_externals = /usr/bin/env