Parsing the tag storage

[kirillt]

We need to read the tags from disk in order to construct the tag selector:

• Grid view: tag selector #14

For this, we need to wait until the corresponding Rust crate is implemented:

• fs-storage: A Crate for Handling Properties, Tags, and Scores ark-core#17

[prokawsar]

@kirillt
We are using now localStorage as storage and working fine for parsing tags. Is it ok this issue?

[kirillt]

@prokawsar localStorage is fine for prototype, but we'll need persistance on disk later. The tags will be persisted as plain file for easier data migration/backup/sync.

We do this in mobile Navigator app, data between Navigator and Gallery must be compatible. We define data format and other importand functions in Rust and inject the library into all our apps.