[PM-24474] Add missing uniffi toml file (#377)

## 🎟️ Tracking

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point to where this change is coming from. -->
[PM-24474 ](https://bitwarden.atlassian.net/browse/PM-24474)

## 📔 Objective

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you're fixing or new feature you're adding. -->
Add missing file uniffi.toml in order to define package name and module
name.

## ⏰ 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

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Author: LRNcardozoWDF

crates/bitwarden-collections/uniffi.toml

@@ -0,0 +1,9 @@
+[bindings.kotlin]
+package_name = "com.bitwarden.collections"
+generate_immutable_records = true
+android = true
+
+[bindings.swift]
+ffi_module_name = "BitwardenCollectionsFFI"
+module_name = "BitwardenCollections"
+generate_immutable_records = true