Improve introduction in light of Gradle support

Author: geoand

quarkus-workshop-super-heroes/docs/src/docs/asciidoc/core-introduction/introduction-installing.adoc

@@ -19,6 +19,10 @@ ifdef::use-ai[]
 include::introduction-installing-ai.adoc[leveloffset=+1]
 endif::use-ai[]
 
+ifdef::use-gradle[]
+include::introduction-installing-quarkus-cli.adoc[leveloffset=+1]
+endif::use-gradle[]
+
 ifdef::use-windows[]
 include::introduction-installing-wsl.adoc[leveloffset=+1]
 endif::use-windows[]
@@ -34,6 +38,9 @@ Before going further, make sure the following commands work on your machine.
 [source,shell]
 ----
 java -version
+ifdef::use-gradle[]
+quarkus --version
+endif::use-gradle[]
 ifdef::use-native[]
 $GRAALVM_HOME/bin/native-image --version
 endif::use-native[]

quarkus-workshop-super-heroes/docs/src/docs/asciidoc/core-introduction/introduction.adoc

@@ -39,11 +39,13 @@ endif::use-azure[]
 
 This workshop is a BYOL (_Bring Your Own Laptop_) session, so bring your Windows, OSX, or Linux laptop.
 ifdef::use-maven[]
+ifndef::use-gradle[]
 You just need JDK {jdk-version} on your machine and Docker (having Apache Maven {maven-version} installed is optional as you will rely on the Apache Maven Wrapper).
+endif::use-gradle[]
 endif::use-maven[]
-ifndef::use-maven[]
-You just need JDK {jdk-version} on your machine and Docker.
-endif::use-maven[]
+ifdef::use-gradle[]
+You need JDK {jdk-version}, Docker, and the Quarkus CLI on your machine.
+endif::use-gradle[]
 ifdef::use-mac,use-windows[]
 On Mac and Windows, Docker for _x_ is recommended instead of the Docker toolbox setup.
 endif::[]