Add nuspec file

[FraserGreenroyd]

Fixes #35

[FraserGreenroyd]

@BHoMBot check compliance
@BHoMBot check required

[bhombot-ci]

@FraserGreenroyd to confirm, the following actions are now queued:

• check code-compliance
• check documentation-compliance
• check project-compliance
• check branch-compliance
• check dataset-compliance
• check copyright-compliance
• check code-compliance
• check documentation-compliance
• check project-compliance
• check core
• check null-handling
• check serialisation
• check versioning
• check installer

[peterjamesnugent]

Looks fine for me, have installed alpha and built successfully.

Only comment is whether we would want to add the BHoM version on L5 - would add one more thing BHoMBot needs to update every milestone but could be worth it?

[FraserGreenroyd]

Only comment is whether we would want to add the BHoM version on L5 - would add one more thing BHoMBot needs to update every milestone but could be worth it?

Not worth it - the version changes with every build for Nuget, so the bot handles inserting the appropriate version number when the nuget is built based on the milestone and sprint that we're currently in 😄

[FraserGreenroyd]

@BHoMBot check ready-to-merge

[bhombot-ci]

@FraserGreenroyd to confirm, the following actions are now queued:

• check ready-to-merge