`filewriter`: static metadata

首先定位 filewriter 及其对 runStart/runStop 消息的处理，然后比较现有文件写入元数据的方式。实现对所列静态元数据的支持，包括将可执行文件名称用于 program_name，并验证 runStart 和 runStop 中可用的所有值都已写入。

The filewriter must be able to write the 'static' metadata for a run.

These are pieces of metadata which only require knowledge of the runStart and runStop messages. This assumes that the run start is emitted with appropriate metadata to enable this data to be written.

This includes:

• raw_data_1/beamline
• raw_data_1/definition
• raw_data_1/definition_local
• raw_data_1/duration
• raw_data_1/end_time
• raw_data_1/experiment_identifier (RB number)
• raw_data_1/measurement/first_run
• raw_data_1/measurement/id
• raw_data_1/measurement/label
• raw_data_1/measurement/subid
• raw_data_1/measurement/type
• raw_data_1/measurement_first_run
• raw_data_1/measurement_id
• raw_data_1/measurement_label
• raw_data_1/measurement_subid
• raw_data_1/measurement_type
• raw_data_1/name
• raw_data_1/notes
• raw_data_1/program_name
• raw_data_1/run_cycle
• raw_data_1/run_number
• raw_data_1/sample/distance
• raw_data_1/sample/height
• raw_data_1/sample/id
• raw_data_1/sample/name
• raw_data_1/sample/shape
• raw_data_1/sample/thickness
• raw_data_1/sample/type
• raw_data_1/sample/width
• raw_data_1/script_name
• raw_data_1/seci_config
• raw_data_1/start_time
• raw_data_1/title
• raw_data_1/user_1/affiliation
• raw_data_1/user_1/name

Potential differences from existing files

• program_name will no longer be ISISICP.exe and will be the name of the filewriter executable.