feat(storage): finish initial basic implementation

- support both s3 & file storage backends
- support imgproxy to scale images
- manually tested with MinIO & local storage
- fixed service discovery issue in APIGatey reconciler not detecting
  service changes
- refactored defaults and env variable code to make it manageable again
- add repo link to docs

magefiles/test.go

@@ -33,5 +33,9 @@ func Test() error {
 		"PATH": strings.Join([]string{os.Getenv("PATH"), out}, string(os.PathListSeparator)),
 	}
 
-	return sh.RunWithV(testEnv, "go", "run", "-modfile=tools/go.mod", tools[Gotestsum], "-f", "pkgname-and-test-fails", "--", "-race", "-shuffle=on", "./...")
+	return sh.RunWithV(
+		testEnv,
+		"go", "run", "-modfile=tools/go.mod",
+		tools[Gotestsum], "-f", "pkgname-and-test-fails", "--", "-race", "-shuffle=on", "./...",
+	)
 }