Update test cases for packages

Added green test case for packages install command

Adding test cases to cmd/app/packages

Add cmd/app tests

Cover pkg/tests

Add pkg/tests golden tests

Update test cases/linting

Covering pkg/tests

Add pkg/tools tests

Add packages delete

Update pkg/oci test cases

Update tests of pkg/plugins

Fix rebuild index

Add packages list command support

Add removing packages

Update installing packages from registry

Add rebuild index manifest support

Add image index support while new package is creating

Add invoking sub-commands regading their verions

Add uploading image using user input

Update manifest

Remove dir link in Plugin

Plugins now can be installed through registry