OBridge v1.2

Final version of OBridge 1.2

• using Generated annotation in generated files
• handling list of primitive types fixed + testcase
• changed exception handling in generated code
• new type of database calls: [storedprocedure](Datasource ds, [Storedprocedure] ctx)
• created some new testcases
• [FIX] #21 code generation for functions: handle return value
• [DOC] licence header for files
• some code refactoring