InputHandler Unit Tests

* Testing request types
** GetAllConversationDataRequest
** GetConversationsRequest
** UpdateHistoryRequests
** UpdateHistoryRequests
** DeleteFriendRequests
** DeleteFriendRequests
** LogoutRequests
** UpdateHistoryRequests
** SearchUsersRequests
** UserNameAvailableRequests
* Made AddParticipantRequest tests verify users gets the conversation id
* Made some utility functions for testing
* Removed print statements
* Made sure that responses of requests are tested
* Deleted unused libraries
* Removed build.bat file
* Removed external libraries, run and build shell scripts
* Installed pitest plugin
* Improved tests with the help of pitest

build.gradle.kts

@@ -1,30 +1,49 @@
 import com.fagi.test.TestResultsService
+import info.solidsoft.gradle.pitest.PitestPluginExtension
 import org.gradle.api.tasks.testing.logging.TestExceptionFormat
 import org.gradle.api.tasks.testing.logging.TestLogEvent
 
+plugins {
+    id("info.solidsoft.pitest") version "1.15.0" apply false
+}
+
 allprojects {
     group = "com.fagi"
     version = "1.0-snapshot"
 }
 
 subprojects {
     apply(plugin = "java")
-
-    repositories {
-        mavenCentral()
-    }
+    apply(plugin = "info.solidsoft.pitest")
 
     tasks.withType<JavaCompile> {
         sourceCompatibility = JavaVersion.VERSION_21.toString()
         targetCompatibility = JavaVersion.VERSION_21.toString()
     }
+
+    configure<PitestPluginExtension> {
+        threads.set(4)
+        outputFormats.set(listOf("XML", "HTML"))
+        exportLineCoverage.set(true)
+        timestampedReports.set(false)
+        junit5PluginVersion.set("1.2.1")
+        verbose.set(false)
+
+        if (project.name in listOf("shared")) {
+            failWhenNoMutations = false
+        }
+    }
 }
 
 // Register the custom build service
 val testResultsServiceProvider = gradle.sharedServices.registerIfAbsent("testResultsService", TestResultsService::class.java) {}
 
 // Configure all projects to use the custom build service
 allprojects {
+    repositories {
+        mavenCentral()
+    }
+
     tasks.withType<Test> {
         testLogging {
             events = setOf(