Improve Funding Vault Discoverability by Grouping Vaults by Spaces

[adityabhattad2021]

Closes #39.

Changes Made:

Database:

• Add a new space table.
• Link funding vaults with a space (many-to-one relation).

UI:

• Add create space form.
• Add functionality to select a space before vault creation.
• Add new space route.
• Add all spaces page.
• Add space details page.