slam tool inclusion

[Sylviabohnenstengel]

Linking AVD's slam tool development as needed for loading LFRic based data. Slam does not yet allow lazy data and is potentially memory hungry which could be an issue for loading our data.
bjlittle/geovista-slam#77

[Sylviabohnenstengel]

• Current status: We agreed to keep grid conversion and metadata conversion as a separate postprocessor as it will be used by a number of different applications such as the RES.
• Work with Anke and Dasha to understand implications for fetch-data task to load LFRic based UMified data
• Dasha to work on this

[jfrost-mo]

The SLAM tool looks to become part of the RNS, so data should already be processed by the time it gets to us. It should just be a case of selecting the correct filename, which currently include the suffix _struct.