Enable debounce for search bars

[tomasMizera]

Our MMSearchInput component has an option to enable debounce search effect (wait with the search so we do not run the complex search logic after each typed letter, but once the furious typing ends).

Let's set the debounce threshold this way:

• for network-related search (projects, workspaces) set the threshold to 400ms
• for local search (features, layers) set the threshold to 250ms

Acceptance criteria:

1. Search boxes across the app start to search once you stop typing
2. Verify that the following searches use debounce:
   • project search (all 3 - downloaded, workspace and explore)
   • features and layers search in the layers page
   • features search within value relation
   • search within value map
   • features search within relation reference (change parent)