Chart details draft (#4)

* Add logo

* Refactor out structs

* Data layer context-awareness

* Mod

* Data layer improvements

* Progress

* Progress

* Progress

* Figured the time format shorter

* Statuses colors

* Sticky URL

* Calculate some diffs inside

* Separate checks

* Scrap gofmt

* Skip custom test in GH

* Shows some colorful diff

pkg/dashboard/data_test.go

@@ -0,0 +1,69 @@
+package dashboard
+
+import (
+	log "github.com/sirupsen/logrus"
+	"helm.sh/helm/v3/pkg/release"
+	"testing"
+)
+
+func TestFlow(t *testing.T) {
+	log.SetLevel(log.DebugLevel)
+
+	var _ release.Status
+	data := DataLayer{}
+	err := data.CheckConnectivity()
+	if err != nil {
+		if err.Error() == "did not find any kubectl contexts configured" {
+			t.Skip()
+		} else {
+			t.Fatal(err)
+		}
+	}
+
+	ctxses, err := data.ListContexts()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, ctx := range ctxses {
+		if ctx.IsCurrent {
+			data.KubeContext = ctx.Name
+		}
+	}
+
+	installed, err := data.ListInstalled()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	chart := installed[1]
+	history, err := data.ChartHistory(chart.Namespace, chart.Name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_ = history
+
+	chartRepoName, curVer, err := chartAndVersion(chart.Chart)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_ = curVer
+
+	upgrade, err := data.ChartRepoVersions(chartRepoName)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_ = upgrade
+
+	manifests, err := data.RevisionManifests(chart.Namespace, chart.Name, history[len(history)-1].Revision)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_ = manifests
+
+	diff, err := data.RevisionManifestsDiff(chart.Namespace, chart.Name, history[len(history)-1].Revision, history[len(history)-2].Revision)
+	if err != nil {
+		t.Fatal(err)
+	}
+	_ = diff
+}