feat(q): stub out Q LSP logic (#5352)

This is the initial iteration of the bare minimum of process management to interact with Amazon Q logic vended by Flare.
It is a direct port of the exploratory work done in https://github.com/rli/lsp-exp/tree/master/src/main/kotlin/org/example/lsp4j

Missing are tests and any sort of edge case handling

Author: rli

plugins/amazonq/shared/jetbrains-community/build.gradle.kts

@@ -22,5 +22,10 @@ dependencies {
     implementation(libs.commons.collections)
     implementation(libs.nimbus.jose.jwt)
 
+    // FIX_WHEN_MIN_IS_242
+    if (providers.gradleProperty("ideProfileName").get() == "2024.1") {
+        implementation("org.eclipse.lsp4j:org.eclipse.lsp4j:0.24.0")
+    }
+
     testFixturesApi(testFixtures(project(":plugin-core:jetbrains-community")))
 }

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/AmazonQLanguageClient.kt

@@ -11,6 +11,7 @@ import java.util.concurrent.CompletableFuture
 /**
  * Requests sent by server to client
  */
+@Suppress("unused")
 interface AmazonQLanguageClient : LanguageClient {
     @JsonRequest("aws/credentials/getConnectionMetadata")
     fun getConnectionMetadata(): CompletableFuture<ConnectionMetadata>

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/AmazonQLanguageServer.kt

@@ -12,6 +12,7 @@ import java.util.concurrent.CompletableFuture
 /**
  * Remote interface exposed by the Amazon Q language server
  */
+@Suppress("unused")
 interface AmazonQLanguageServer : LanguageServer {
     @JsonRequest("aws/credentials/token/update")
     fun updateTokenCredentials(payload: UpdateCredentialsPayload): CompletableFuture<ResponseMessage>