Fix stucking wait mode caused by unscheduled workloads and disconnected agents variations

[inf17101]

Issues: #320

The PR covers the following:

• fix the stucking wait mode when pending initial workloads with disconnected agents are deleted
• display the deleted pending initial workloads as removed properly in the wait list
• fix the stucking wait mode when workloads are updated to be unscheduled (empty agent name) and vice versa
• fix the stucking wait mode when unscheduled workloads are deleted and display them properly as removed in the wait list
• fixing the Ankaios server sending a removed execution state when a pending initial workload is deleted and its agent is disconnected
• fix the stucking wait mode when a workload is created and during the creation the agent has been disconnected
• fix the stucking wait mode when a workload is scheduled for deletion on the runtime and the agent is disconnected during the delete operation
• fix a gap in the ank get workload swdd requirements by creating a new swdd for not described functionality when constructing the list of workloads
• creating new swdds or changing existing swdds: here I have tried to keep the amount of requirements in the cli at a minimum, can be discussed in the review if it is enough or if we need to split them a little bit more.

Definition of Done

The PR shall be merged only if all items mentioned in CONTRIBUTING.md have been followed. In case an item is not applicable as described, please provide a short explanation in the description.

• All steps in CONTRIBUTING.md have been handled

[inf17101]

@krucod3: Do you think we need to change precondition for the following swdds after fixing the gap in ank get workloads?:

• swdd~cli-shall-sort-list-of-workloads~1
• swdd~cli-shall-filter-list-of-workloads~1
• swdd~cli-shall-present-list-of-workloads~1

to point out more that sorting, filtering and so on is done after the CLI has created the initial list of workloads with their runtime names based on the current CompleteState? This is then closer to the code.

Since the CLI does not receive a list from the server directly, which can be sorted, filtered and so on. Furthermore, it processes the CompleteState converts it into a list of workloads with inserting their corresponding runtime names and then this new list is sorted, filtered and presented...