Order dependency imports

[KevFan]

Driven by the conversation at #411 (comment), there are a few inconsitencies in a few places regarding the import order and grouping of dependencies.

The ask of this issue is to address and look into potential solutions to ensure a consitent order / grouping to depenendencies across the files.

[eguzki]

This is my own personal taste:

Three groups:

• Top: Golang standard library packages
• Middle: Third party library packages
• Bottom: current module's packages

For example

import (                                                                        
    "context"                                                                   
    "encoding/json"                                                             
                                                                                
    "github.com/go-logr/logr"                                                   
    apierrors "k8s.io/apimachinery/pkg/api/errors"                              
    ctrl "sigs.k8s.io/controller-runtime"                                       
    "sigs.k8s.io/controller-runtime/pkg/client"                                 
    "sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"              
    "sigs.k8s.io/controller-runtime/pkg/handler"                                
    gatewayapiv1 "sigs.k8s.io/gateway-api/apis/v1"                              
                                                                                
    kuadrantv1beta2 "github.com/kuadrant/kuadrant-operator/api/v1beta2"         
    "github.com/kuadrant/kuadrant-operator/pkg/common"                          
    "github.com/kuadrant/kuadrant-operator/pkg/reconcilers"                     
)                                                                               

goimport orders your imports alphabetically and also maintains any groupings you make