[bugfix] Improve content installer. Addresses #6517

[dizzzz]

Improve content installer. Addresses #6517

• added missing xar files -0 made openAPI xars mandatory install. exist-openapi could be optional but mandatory when eXide is selected?
• updated xar descriptions
• order of xar names
• update final 'startup' text --> not sure about "clickable options" text at finish step
• @reinhapa what about these 2 errors in picture below?

apps panel:

[reinhapa]

• @reinhapa what about these 2 errors in picture below?

There seems no special packsLang.xml available, that defines the basic translations for the Installer Packs... (it is actually missing in exist-installer/src/main/izpack

[duncdrum]

the test failure

Error: core] [ERROR] Errors: 
Error: core] [ERROR]   MoveResourceTest.testMove:116 » Execution java.io.IOException: Received RST_STREAM: Stream cancelled
[exist-core] [INFO] 
Error: core] [ERROR] Tests run: 7010, Failures: 0, Errors: 1, Skipped: 102

is unrelated. see #6532

[duncdrum]

@reinhapa so I take it we should add a packslang.xml for en right?

[reinhapa]

@reinhapa so I take it we should add a packslang.xml for en right?

Yes, that will eliminate the warning...

[line-o]

LGTM

[line-o]

@dizzzz would you like to add the packslang.xml to this PR or favor to do it in a follow up ?

[dizzzz]

I can do it after this week. If it is too late, someone else need to pick it up.

And: what should end up in the file :)

[dizzzz]

all is OK now:

 java -jar target/exist-installer-7.0.0-SNAPSHOT.jar
Using laf com.jgoodies.looks.plastic.Plastic3DLookAndFeel
====================
Installation started
Framework: 5.2.6-ef357 (IzPack)
Platform: mac_osx,version=26.5.2,arch=unknown,symbolicName=null,javaVersion=21.0.9
Installation finished
[ Writing the uninstaller data ... ]

@reinhapa are you ok with this?