package.sh: explicitly list files to include in the package

Reduce the number of files included in the packaged core by explicitly
listing the ones to include.

Author: pillo79

.github/workflows/package_core.yml

@@ -50,7 +50,6 @@ jobs:
       - name: Package
         run: |
           ./extra/package.sh ${{ env.CORE_TAG }}
-          mv ../${{ env.CORE_ARTIFACT }}.tar.bz2 .
 
       - name: Archive core
         uses: actions/upload-artifact@v4

.gitignore

@@ -1,3 +1,4 @@
 extra/post_build_tool/distrib/
 build/
 venv/
+ArduinoCore-zephyr-*.tar.bz2

extra/package.lst

@@ -0,0 +1,10 @@
+boards.txt
+platform.txt
+programmers.txt
+LICENSE
+README.md
+doc/
+cores/
+libraries/
+firmwares/
+variants/

extra/package.sh

@@ -1,13 +1,18 @@
 #!/bin/bash
 
-if [ ! -f platform.txt ]; then
-  echo Launch this script from the root core folder as ./extras/package.sh VERSION
-  exit 2
+set -e
+
+if [ -z "$1" ]; then
+	echo "Usage: $0 VERSION"
+	exit 1
 fi
 
-FOLDER=`basename $PWD`
+if [ ! -f platform.txt ]; then
+	echo "Launch this script from the root core folder as ./extra/package.sh VERSION"
+	exit 2
+fi
 
+PACKAGE=ArduinoCore-zephyr
 VERSION=$1
 
-cd ..
-tar  --exclude=extras/** --exclude=.git* --exclude=build --exclude=venv --exclude=samples -cjhf ArduinoCore-zephyr-${VERSION}.tar.bz2 $FOLDER
+tar -cjhf ${PACKAGE}-${VERSION}.tar.bz2 -T extra/package.lst --transform "s,^,${PACKAGE}/,"