SLO Management filtering and sorting capabilities

[mgiota]

Summary

Current SLO Management page needs some basic improvements. There are no filters and you can not sort on columns.

Acceptance criteria

• filter out by running state
• sort on columns

[elasticmachine]

Pinging @elastic/obs-ux-management-team (Team:obs-ux-management)

[baileycash-elastic]

Just a note that sorting can only be performed on fields that are saved as keywords. Do we want to update the SLO saved object mappings to achieve this?

(cc: @shahzad31)

[kdelemme]

I think we can postpone this as sorting by "Running" state (i.e. enable/disable SLO) or by name would not make too much difference for the incident 1897 anyway