[identity] AccountManager supports ephemeral

This enables support for ephemeral accounts in the AccountManager,
i.e. accounts that are scoped to the duration of a session, or at the
very most lives until the end of a power cycle. Account data for an
ephemeral account is stored in memory only. The opposite of an ephemeral
account is a persistent account.

Changes:
- AccountManager now opens connection to a the (new)
  `account_handler_ephemeral` component for any ephemeral accounts.
- For now, `lifetime` is stored as an immutable property of the
  `AccountHandlerConnection`.
- AccountManager uses this property to filter out persistent accounts
  when it writes its account list to disk. The in-memory map
  (`ids_to_handlers`) contains both ephemeral and persistent accounts.

AUTH-76 #comment

Change-Id: Ib35790eeed2ee67d078cb649817f877763a8e926
3 files changed
tree: 7d5ab275ef5b2ca793c5c4c4a94e544fd991a0fb
  1. boards/
  2. build/
  3. buildtools/
  4. bundles/
  5. docs/
  6. examples/
  7. garnet/
  8. peridot/
  9. products/
  10. scripts/
  11. sdk/
  12. src/
  13. third_party/
  14. tools/
  15. zircon/
  16. .clang-format
  17. .clang-tidy
  18. .dir-locals.el
  19. .gitattributes
  20. .gitignore
  21. .gn
  22. AUTHORS
  23. BUILD.gn
  24. CODE_OF_CONDUCT.md
  25. CONTRIBUTING.md
  26. LICENSE
  27. OWNERS
  28. PATENTS
  29. README.md
  30. rustfmt.toml
README.md

Fuchsia

Pink + Purple == Fuchsia (a new operating system)

What is Fuchsia?

Fuchsia is a modular, capability-based operating system. Fuchsia runs on modern 64-bit Intel and ARM processors.

Fuchsia is an open source project with a code of conduct that we expect everyone who interacts with the project to respect.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See the documentation.