generate final ecosystem-based adaptation value

[gubuntu]

combine the outputs from #61, #62, #63, #64

references in the project's '5-operations' Drive folder:

• Holness_2017_Integrated Spatial Prioritization for KNP Buffer - report for review
• process flow diagram https://app.diagrams.net/#G1cZREmkh4cu7OrkGwQicZs9Ul74JdxWbn aka 'WBR SEMP process flow.drawio'