Deleting / Partial remove overrides via Experiment

[pratikmishra356]

Preface

Ideally override should not be deleted directly , it should go via experiment.

Approach

In the create Experiment api , capture some flag like delete overrides
in this flow we will allow variants to have different keys, currently we follow that all the variants should have same set of keys , for this type of experiment create , we will allow overrides to have different sets of keys

Case 1 : In Partial delete overrides , the control variant will have the same sets of keys and values as there in the current state of overrides, user can add other variants where they will be allowed to only remove keys and not update any values.
On experiment creation we will create corresponding contexts according to all the variants

Case 2 : Deletion of the whole override, now one variants can remove all the keys , in that case that variant's context will not be create because its not correct to have contexts with empty overrides , so we will just ignore that variant while context creation

Note: In both of the cases , the actual overrides for which we want to delete/partially delete by creating this type of experiment , we will delete that actual overrides on experiment creation

example :

state0 
{
 [$os == android]
 key1: v1,
 key2: v2
}

Experiment create 1 : 
   context : [$os == android]
    variant1 : { key1 : v1,
                      key2: v2 }
                      
    variant 2: { key1: v1}
    
state0 -> state1 
{
 [$os == android && variants has variant1]
 key1: v1,
 key2: v2
 
 [$os == android && variants has variant2]
 key1: v1,
}

Experiment create 2: 
   context : [$os == android]
    variant1 : { key1 : v1,
                      key2: v2 }
                      
    variant 2: {}
    
state0 -> state2 
{
 [$os == android && variants has variant1]
 key1: v1,
 key2: v2
}

[pratikmishra356]

Api endpoint
Option 1 : Use create experiment endpoint itself and handle this special cases in create handler
Option 2 : Open for suggestions else option 1

UI flow
Option 1: Should we have another button on the override page for delete with experiment ,
Option 2 : some kind of selection on the existing button
like we can use delete button but with option delete directly or delete with experiment ( now we support partial delete but that info is conveyed to user)
if option 2 , then should we use different modal/form/page because it will have some different logic