Basic Lifecycle Management Interfaces + v2 Concrete Implementations (#568)

This adds the basic interfaces for StatefulSet-based lifecycle
management for initially the v2 operator. Currently it is not
leveraged in a controller, as that needs to be subsequently broken
out from the original PoC.

Author: andrewstucki

operator/go.mod

@@ -47,6 +47,7 @@ require (
 	go.uber.org/zap v1.27.0
 	golang.org/x/exp v0.0.0-20240904232852-e7e105dedf7e
 	golang.org/x/sync v0.10.0
+	golang.org/x/tools v0.29.0
 	gopkg.in/yaml.v2 v2.4.0
 	gopkg.in/yaml.v3 v3.0.1
 	helm.sh/helm/v3 v3.14.4
@@ -296,7 +297,6 @@ require (
 	golang.org/x/term v0.28.0 // indirect
 	golang.org/x/text v0.21.0 // indirect
 	golang.org/x/time v0.7.0 // indirect
-	golang.org/x/tools v0.29.0 // indirect
 	gomodules.xyz/jsonpatch/v2 v2.4.0 // indirect
 	google.golang.org/api v0.203.0 // indirect
 	google.golang.org/genproto v0.0.0-20241015192408-796eee8c2d53 // indirect