Include PR/Issue links in the changelog (#1630)

.chloggen/CHANGELOG.tmpl

@@ -0,0 +1,72 @@
+{{/*
+Based on the default template:
+https://github.com/open-telemetry/opentelemetry-go-build-tools/blob/v0.15.0/chloggen/internal/chlog/summary.tmpl
+*/}}
+{{- define "entry" -}}
+- `{{ .Component }}`: {{ .Note }} (
+{{- range $i, $issue := .Issues }}
+{{- if $i }}, {{ end -}}
+[#{{ $issue }}](https://github.com/open-telemetry/semantic-conventions/issues/{{ $issue }})
+{{- end -}}
+)
+
+{{- if .SubText }}
+{{ .SubText | indent 2 }}
+{{- end }}
+{{- end }}
+## {{ .Version }}
+
+{{- if .BreakingChanges }}
+
+### 🛑 Breaking changes 🛑
+
+{{- range $i, $change := .BreakingChanges }}
+{{- if eq $i 0}}
+{{end}}
+{{ template "entry" $change }}
+{{- end }}
+{{- end }}
+
+{{- if .Deprecations }}
+
+### 🚩 Deprecations 🚩
+
+{{- range $i, $change := .Deprecations }}
+{{- if eq $i 0}}
+{{end}}
+{{ template "entry" $change }}
+{{- end }}
+{{- end }}
+
+{{- if .NewComponents }}
+
+### 🚀 New components 🚀
+
+{{- range $i, $change := .NewComponents }}
+{{- if eq $i 0}}
+{{end}}
+{{ template "entry" $change }}
+{{- end }}
+{{- end }}
+
+{{- if .Enhancements }}
+
+### 💡 Enhancements 💡
+
+{{- range $i, $change := .Enhancements }}
+{{- if eq $i 0}}
+{{end}}
+{{ template "entry" $change }}
+{{- end }}
+{{- end }}
+
+{{- if .BugFixes }}
+
+### 🧰 Bug fixes 🧰
+
+{{- range $i, $change := .BugFixes }}
+{{- if eq $i 0}}
+{{end}}
+{{ template "entry" $change }}
+{{- end }}
+{{- end }}

.chloggen/config.yaml

@@ -22,3 +22,6 @@ change_logs:
 # If 'change_logs' is specified in this file, and no value is specified for 'default_change_logs',
 # then 'change_logs' MUST be specified in every entry file.
 default_change_logs: [user]
+
+# Custom template for the changelog that include links for the issue/PRs
+summary_template: .chloggen/CHANGELOG.tmpl