DPL-894 Convert VueX modules to Pinia stores

[seenanair]

User story
As Pinia has now become the defacto recommended state management library for Vue 3, we are planning to migrate from VueX to Pinia. As part of clean migration, the conversion is planned module by module from VueX to Pinia.

• Create Pinia directory (stores)
• For each VueX module
  • Convert to a Pinia store with id same as namespace in Vuex
  • Stores depend on each other will simply import the other store
  • Convert state, getters, action
  • Remove mutation
• Convert usage inside components

• Use Options API support of Pinia to maintain the existing code as much as possible

Acceptance criteria
To be considered successful the solution must allow replacement of following Vuex modules:

• ont/pools
• ont/runs
• pacbio/plates
• pacbio/requests
• Refactor OntRuns to be OntRunCreate
• move fetchOntRuns to OntRuns Pinia stores
• move setInstruments to OntInstruments Pinia store
• create Pinia store for Pacbio Library Types

Who are the primary contacts for this story
Steve/Seena

Additional context
This story has a non-blocking relationship with:
#1279
#1326
References
[Pinia]
[Migration (https://pinia.vuejs.org/)]
[Migration] (https://pinia.vuejs.org/cookbook/migration-vuex.html)