Add search bar and filters option for the participation spaces from the administration panel

ref: ED005

User story

As an admin, within each type of space (Processes, Assemblies, Initiatives, Consultations, Conferences), I want to be able to:

• search for a participation space by title
• filter by: date range, private/public, status (published, unpublished)
• select how many spaces are shown per page

URL:
https://www.decidim.barcelona/admin/participatory_processes
https://www.decidim.barcelona/admin/assemblies
https://www.decidim.barcelona/admin/initiatives
https://www.decidim.barcelona/admin/conferences
https://www.decidim.barcelona/admin/consultations

Related issues

https://meta.decidim.org/processes/roadmap/f/122/proposals/13099

Tasks

• add search options for a participation space by title
• add filter options by: date range, private/public, status (published, unpublished). Design required
• add sorting options by creation date in Conferences, Initiatives and Consultations
• add pagination options to select how many spaces are shown per page => PR Add per_page option in Admin for participants #5480