Migrate Anthropic client to KoogHttpClient (#1179)

* First step to provide other Http clients
* Rename `type` to avoid serialization issues

Future work:
* Anthropic supports thinking streaming and built-in tool calls
(https://platform.claude.com/docs/en/build-with-claude/streaming), but
we can only add it to assistant message or our tools calls. We have to
support it in future

Author: tiginamaria

integration-tests/src/jvmTest/kotlin/ai/koog/integration/tests/executor/ExecutorIntegrationTestBase.kt

@@ -538,7 +538,8 @@ abstract class ExecutorIntegrationTestBase {
 
             withRetry {
                 try {
-                    checkExecutorMediaResponse(getExecutor(model).execute(prompt, model).single())
+                    val response = getExecutor(model).execute(prompt, model).single()
+                    checkExecutorMediaResponse(response)
                 } catch (e: LLMClientException) {
                     when (scenario) {
                         TextTestScenario.EMPTY_TEXT -> {

prompt/prompt-executor/prompt-executor-clients/prompt-executor-anthropic-client/build.gradle.kts

@@ -18,6 +18,7 @@ kotlin {
                 api(project(":prompt:prompt-executor:prompt-executor-clients"))
                 api(project(":prompt:prompt-llm"))
                 api(project(":prompt:prompt-model"))
+                api(project(":http-client:http-client-ktor"))
                 api(libs.kotlinx.coroutines.core)
                 api(libs.kotlinx.datetime)
                 api(libs.ktor.client.content.negotiation)