Use Hive CE database to replace Hive database

Signed-off-by: dab246 <tdvu@linagora.com>

docs/adr/0066-synchronize-caching.md

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+# 66. Synchronize caching
+
+Date: 2025-06-18
+
+## Status
+
+Accepted
+
+## Context
+
+Synchronizing server and database data is quite troublesome, 
+when we use many protocols to receive mails (FCM, WebSocket, Memory operator). 
+In addition, we are using `Hive` database to store data, 
+it does not support multiple isolate to access the database. 
+This leads to inconsistent database data, sometimes corrupted and lost data.
+
+## Decision
+
+To overcome this problem we need a database that can support multiple isolate.
+So we need to use [Hive_CE](https://pub.dev/packages/hive_ce) to replace `Hive` database.
+Hive CE is a spiritual continuation of Hive v2 with the following new features, such as:
+
+  - Isolate support through IsolatedHive
+  - Automatic type adapter generation using the GenerateAdapters annotation
+  - No more manually adding annotations to every type and field
+  - Generate adapters for classes outside the current package
+  - A HiveRegistrar extension that lets you register all your generated adapters in one call
+  - Extends the maximum type ID from 223 to 65439
+  ...
+
+## Consequences
+
+- Data is always synchronized with the latest