implements: report on stable functions in json output

Because there will be a lot of stable functions we only report on them
in the json report as the text report is more meant for summaries.

Signed-off-by: John Mulligan <jmulligan@redhat.com>

contrib/implements/internal/implements/inspector.go

@@ -23,6 +23,7 @@ type Inspector struct {
 
 	deprecated []*goFunction
 	preview    []*goFunction
+	stable     []*goFunction
 }
 
 // SetExpected sets the expected C functions, asuming the supplied prefix.
@@ -62,6 +63,7 @@ func (ii *Inspector) update() {
 	}
 	ii.deprecated = append(ii.deprecated, ii.visitor.deprecated...)
 	ii.preview = append(ii.preview, ii.visitor.preview...)
+	ii.stable = append(ii.stable, ii.visitor.stable...)
 }
 
 // NewInspector returns a newly created code inspector object.

contrib/implements/internal/implements/json_report.go

@@ -56,6 +56,7 @@ type jrPackage struct {
 	Missing    []jrFunction `json:"missing,omitempty"`
 	Deprecated []gFunc      `json:"deprecated_api,omitempty"`
 	Preview    []gFunc      `json:"preview_api,omitempty"`
+	Stable     []gFunc      `json:"stable_api,omitempty"`
 }
 
 type jrOut map[string]jrPackage
@@ -121,6 +122,10 @@ func collectFuncs(jp *jrPackage, ii *Inspector) {
 		jp.Preview = append(jp.Preview,
 			gFunc{Name: gf.fullName, Comment: gf.comment})
 	}
+	for _, gf := range ii.stable {
+		jp.Stable = append(jp.Stable,
+			gFunc{Name: gf.fullName, Comment: gf.comment})
+	}
 }
 
 func mkeys(m map[string]bool) []string {