refactor(mobile): add Isar DB & Store class (#1574)

* refactor(mobile): add Isar DB & Store class

new Store: globally accessible key-value store like Hive (but based on Isar)

replace first few places of Hive usage with the new Store

* reduce max. DB size to prevent errors on older iOS devices

---------

Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/pubspec.lock

@@ -239,6 +239,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.2.3"
+  dartx:
+    dependency: transitive
+    description:
+      name: dartx
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
   easy_image_viewer:
     dependency: "direct main"
     description:
@@ -547,6 +554,27 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.3"
+  isar:
+    dependency: "direct main"
+    description:
+      name: isar
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.5"
+  isar_flutter_libs:
+    dependency: "direct main"
+    description:
+      name: isar_flutter_libs
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.5"
+  isar_generator:
+    dependency: "direct dev"
+    description:
+      name: isar_generator
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.5"
   js:
     dependency: transitive
     description:
@@ -1063,6 +1091,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.4.12"
+  time:
+    dependency: transitive
+    description:
+      name: time
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.3"
   timing:
     dependency: transitive
     description:
@@ -1301,6 +1336,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "6.1.0"
+  xxh3:
+    dependency: transitive
+    description:
+      name: xxh3
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
   yaml:
     dependency: transitive
     description: