Persist UI State across app launches

[helloanoop]

This issue will track all efforts related to implementing persistence of UI state across app launches.

• Last Selected Environment
• Runtime Variables

Related Issues

• feature request: remember open requests #305
• Sorting collections alphabetically is not persisted across app startups #1637
• Feature request: Persist response filter when switching between tabs #1391
• Persist collapse/expand state in JSON response preview #874
• [User Experience] Persist sidebar width to preserve application restarts #635
• feat: persist collection variables between launches #421
• feat: save request/response history (including between launches) #411
• Persist Last Selected Environment upon reopening app #112
• [Feature request] Save/restore workspace on close/open app #565

Related PR's

• feat(#1652): persist entire app state between launches #1664
• feat: persist last opened env per collection #2238
• feat: remember last selected environment #1971

[berlingoqc]

#3020
this should be fix and consistent between app launch

[helloanoop]

We've implemented an approach for persisting UI state, and the latest version Bruno as of this date now remembers the last selected environment within a collection. We'll continue adding more elements to be saved and rehydrated upon relaunch.