Add jarmode tools command to print the SBOM

Add an 'sbom' command to the tools jar mode which prints the SBOM
packaged in an uber jar or war. The SBOM is located using the
Sbom-Location manifest attribute and its bytes are copied verbatim to
the console, or to the file given by --destination.

See gh-51505

Signed-off-by: Hyeongjun Cho <ryuu.public@gmail.com>

documentation/spring-boot-docs/src/docs/antora/modules/how-to/pages/build.adoc

@@ -116,6 +116,8 @@ plugins {
 }
 ----
 
+TIP: To print the SBOM packaged in an uber jar or war, run `java -Djarmode=tools -jar my-app.jar sbom`.
+
 
 
 [[howto.build.customize-dependency-versions]]

documentation/spring-boot-docs/src/docs/antora/modules/reference/pages/packaging/container-images/dockerfiles.adoc

@@ -22,6 +22,7 @@ Usage:
 Available commands:
   extract      Extract the contents from the jar
   list-layers  List layers from the jar that can be extracted
+  sbom         Print the SBOM from the jar
   help         Help about any command
 ----