Refactor: Update dependencies and Gradle configuration

This commit updates various dependencies and reconfigures Gradle settings to newer versions and standards.

Specific changes include:

-   Updated Android Gradle Plugin to 8.6.1
-   Updated Kotlin to 2.1.20
-   Updated Compose Compiler to 1.5.15
-   Updated Compose BOM to 2025.04.01
-   Updated Hilt to 2.54
-   Updated KSP to 2.1.20-2.0.0
-   Updated other dependencies like Navigation, Core-Ktx, Lifecycle, Activity Compose, Room, Paging, Coil, Serialization Json
-   Migrated to Java 21
-   Applied Compose plugin
- Updated target and compile SDK to 35
- updated jvm target to Java 21

.idea/appInsightsSettings.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AppInsightsSettings">
+    <option name="tabSettings">
+      <map>
+        <entry key="Firebase Crashlytics">
+          <value>
+            <InsightsFilterSettings>
+              <option name="connection">
+                <ConnectionSetting>
+                  <option name="appId" value="PLACEHOLDER" />
+                  <option name="mobileSdkAppId" value="" />
+                  <option name="projectId" value="" />
+                  <option name="projectNumber" value="" />
+                </ConnectionSetting>
+              </option>
+              <option name="signal" value="SIGNAL_UNSPECIFIED" />
+              <option name="timeIntervalDays" value="THIRTY_DAYS" />
+              <option name="visibilityType" value="ALL" />
+            </InsightsFilterSettings>
+          </value>
+        </entry>
+      </map>
+    </option>
+  </component>
+</project>