Serialiser_Engine: Force invariant representation of number in serialisation

[adecler]

Issues addressed by this PR

Closes #3130

• Overall, the serialisation of numbers was already relying on Mongo to do things correctly but there was a few cases where we were doing a 'manual' conversion to/from strings.

• I used CultureInfo.InvariantCulture instead of en-GB because it is more robust to changes

• Integers don't need formatting constraints as they don't change across cultures. I also checked other types like Timespan and DateTime and they don't need any modification as the first is invariant across cultures for default formatting and the second is represented as a long anyways.

[FraserGreenroyd]

@BHoMBot check serialisation

[bhombot-ci]

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

• check serialisation

There are 9 requests in the queue ahead of you.

[FraserGreenroyd]

Have reviewed the code and the changes make sense, and I cannot think of any other places currently where we would need to do this within the core engine.

I think it's worth capturing a wiki page on this convention for future reference, but that can be done independently of deploying this fix for ZCT or other platforms requiring it.

[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

There are 11 requests in the queue ahead of you.

[bhombot-ci]

The check code-compliance has already been run previously and recorded as a successful check. This check has not been run again at this time.

[bhombot-ci]

The check documentation-compliance has already been run previously and recorded as a successful check. This check has not been run again at this time.

[bhombot-ci]

The check serialisation has already been run previously and recorded as a successful check. This check has not been run again at this time.

[FraserGreenroyd]

@BHoMBot this is a DevOps instruction. I am requesting neutral checks on: versioning, unit-tests, ready-to-merge

[bhombot-ci]

@FraserGreenroyd I have provided neutral checks to the checks requested. These checks will need to be run properly to obtain full results.