Package: add .tar.gz package for Linux platforms

[tuhaihe]

closes: #ISSUE_Number

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[leborchuk]

LGTM, check it on my development env, successfully create package:

xifos@xifos-dev-jammy:~/git/cloudberry-backup$ make package-linux-amd64
Building Linux AMD64 package...
GOOS=linux GOARCH=amd64 make package
make[1]: Entering directory '/home/xifos/git/cloudberry-backup'
Building package for linux/amd64 with CGO_ENABLED=1...
Creating install script...
Creating tar.gz package...
Package created: build/apache-cloudberry-backup-incubating-2.1.0-linux-amd64.tar.gz
Contents:
apache-cloudberry-backup-incubating-2.1.0-linux-amd64/
apache-cloudberry-backup-incubating-2.1.0-linux-amd64/install.sh
apache-cloudberry-backup-incubating-2.1.0-linux-amd64/bin/
apache-cloudberry-backup-incubating-2.1.0-linux-amd64/bin/gpbackup_helper
apache-cloudberry-backup-incubating-2.1.0-linux-amd64/bin/gpbackup_s3_plugin
apache-cloudberry-backup-incubating-2.1.0-linux-amd64/bin/gprestore
apache-cloudberry-backup-incubating-2.1.0-linux-amd64/bin/gpbackup
make[1]: Leaving directory '/home/xifos/git/cloudberry-backup'