* Canonify import of i18n module
Should always be imported as `tr`, or `tr2` if there is a name collision
(Svelte).
* Add helper for garbage collecting ftl strings
Also add a serializer for ftl asts.
* Add helper for filter-mapping `DirEntry`s
* Fix `i18n_helpers/BUILD.bazel`
* run cargo-raze
* Refactor `garbage_collection.rs`
- Improve helper for file iterating
- Remove unused terms as well
- Fix issue with checking for nested messages by switching to a regex-
based approach (which runs before deleting)
- Some more refactorings and lint fixes
* Fix lints in `serialize.rs`
* Write json pretty and sorted
* Update `serialize.rs` and fix header
* Fix doc and remove `dbg!`
* Add binaries for ftl garbage collection
Also relax type constraints and strip debug tests.
* add rust_binary targets for i18n helpers (dae)
* add scripts to update desktop usage/garbage collect (dae)
Since we've already diverged from 2.1.49, we won't gain anything
from generating a stable json just yet. But once 2.1.50 is released,
we should run 'ftl/update-desktop-usage.sh stable'.
* add keys from AnkiMobile (dae)
* Mention caveats in `remove-unused.sh`
Instead of generating a fluent.proto file with a giant enum, create
a .json file representing the translations that downstream consumers
can use for code generation.
This enables the generation of a separate method for each translation,
with a docstring that shows the actual text, and any required arguments
listed in the function signature.
The codebase is still using the old enum for now; updating it will need
to come in future commits, and the old enum will need to be kept
around, as add-ons are referencing it.
Other changes:
- move translation code into a separate crate
- store the translations on a per-file/module basis, which will allow
us to avoid sending 1000+ strings on each JS page load in the future
- drop the undocumented support for external .ftl files, that we weren't
using
- duplicate strings in translation files are now checked for at build
time
- fix i18n test failing when run outside Bazel
- drop slog dependency in i18n module
