Add support for kbrew registries

[PrasadG193]

• Add support for cloning and caching kbrew-registry at runtime
• Update Search functionality to search for apps withing registry
• Make config-file flag optional, choose recipe from default registry

Usage:

$ kbrew search
Adding kbrew-dev/kbrew-registry registry to /home/prasad/.kbrew/registries
Registry kbrew-dev/kbrew-registry head at d020a5c5fcf10f56ff87ffd9d92072cbe1954c10 refs/heads/main
Available recipes:
cert-manager
kafka-operator
kube-prometheus-stack
zookeeper-operator


$ kbrew install cert-manager
namespace/cert-manager unchanged
Installing raw app cert-manager/cert-manager
customresourcedefinition.apiextensions.k8s.io/certificaterequests.certmanager.k8s.io configured
customresourcedefinition.apiextensions.k8s.io/certificates.certmanager.k8s.io configured
customresourcedefinition.apiextensions.k8s.io/challenges.certmanager.k8s.io created
.
.
.


$ kbrew search kafka
Available recipes:
kafka-operator