[PM-20615] Only process incoming messages once (#264)

## 🎟️ Tracking

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point to where this change is coming from. -->

## 📔 Objective

- Create a new thread/task and delegate message processing to it
- Make sure CryptoProvider only sees each incoming message once
- Make everything multi-thread safe
  - Enables a single thread to take ownership of message processing
- but will also allow us to use the IPC framework with `BitwardenClient`

## ⏰ Reminders before review

- Contributor guidelines followed
- All formatters and local linters executed and passed
- Written new unit and / or integration tests where applicable
- Protected functional changes with optionality (feature flags)
- Used internationalization (i18n) for all UI strings
- CI builds passed
- Communicated to DevOps any deployment requirements
- Updated any necessary documentation (Confluence, contributing docs) or
informed the documentation
  team

## 🦮 Reviewer guidelines

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- 👍 (`:+1:`) or similar for great changes
- 📝 (`:memo:`) or ℹ️ (`:information_source:`) for notes or general info
- ❓ (`:question:`) for questions
- 🤔 (`:thinking:`) or 💭 (`:thought_balloon:`) for more open inquiry
that's not quite a confirmed
  issue and could potentially benefit from discussion
- 🎨 (`:art:`) for suggestions / improvements
- ❌ (`:x:`) or ⚠️ (`:warning:`) for more significant problems or
concerns needing attention
- 🌱 (`:seedling:`) or ♻️ (`:recycle:`) for future improvements or
indications of technical debt
- ⛏ (`:pick:`) for minor or nitpick changes

Author: coroiu

Cargo.lock

@@ -15,22 +15,22 @@ wasm = [
     "dep:wasm-bindgen",
     "dep:wasm-bindgen-futures",
     "dep:js-sys",
-    "bitwarden-error/wasm"
+    "bitwarden-error/wasm",
+    "bitwarden-threading/wasm"
 ] # WASM support
 
 [dependencies]
 bitwarden-error = { workspace = true }
+bitwarden-threading = { workspace = true }
 js-sys = { workspace = true, optional = true }
+log = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
 thiserror = { workspace = true }
-tokio = { features = ["sync", "time"], workspace = true }
+tokio = { features = ["sync", "time", "rt"], workspace = true }
 tsify-next = { workspace = true, optional = true }
 wasm-bindgen = { workspace = true, optional = true }
 wasm-bindgen-futures = { workspace = true, optional = true }
 
-[dev-dependencies]
-tokio = { workspace = true, features = ["rt"] }
-
 [lints]
 workspace = true

crates/bitwarden-ipc/Cargo.toml

@@ -0,0 +1 @@
+pub(super) const CHANNEL_BUFFER_CAPACITY: usize = 50;