Add top-level package for Java implementation

Add the spesb prefix to all self implemented java packages of the project. Because this changes the fully qualified class name of the main classes the build.gradle files need to adopt to this.

closes she/spesb#6

%0.1.0

added 12 commits

• 0a529341...6d4b5de3 - 11 commits from branch she:master
• 004bdbb8 - Merge branch 'master' into feature/topLevelPackageJava

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Assing @she

changed the description

assigned to @she

merged

mentioned in commit e8e74457