Environment_Engine: Check for directory in ExportEPW

[robinflyman]

Closes #2775

Added a check for a valid directory and a error message if it doesn't exist.

[FraserGreenroyd]

Engine specified in PR title is incorrect, please specify the correct engine that is receiving the changes.

[jamesramsden-bh]

Tested in GH. The following failed the new check when they should have passed:

• A file existing that exactly matches the outputPath variable
• A folder and a new file, where the folder is already existing

[robinflyman]

@BHoMBot check versioning

[bhombot-ci]

@robinflyman to confirm, the following checks are now queued:

• versioning

[FraserGreenroyd]

@BHoMBot check ready-to-merge

[bhombot-ci]

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

• ready-to-merge

There are 4 requests in the queue ahead of you.

[bhombot-ci]

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

• ready-to-merge

[FraserGreenroyd]

@BHoMBot check core

[bhombot-ci]

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

• core

[jamesramsden-bh]

Tested with valid path, path without filename, and path with filename and non-existing directory path. All now behave as expected.

[jamesramsden-bh]

@BHoMBot check required

[bhombot-ci]

@jamesramsden-bh to confirm, the following checks are now queued:

• code-compliance
• documentation-compliance
• project-compliance
• core
• null-handling
• serialisation
• versioning
• installer

[bhombot-ci]

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

[FraserGreenroyd]

@BHoMBot check copyright-compliance
@BHoMBot check dataset-compliance

[bhombot-ci]

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

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There are 310 requests in the queue ahead of you.

[bhombot-ci]

FAO: @FraserGreenroyd
@FraserGreenroyd is seeking dispensation on this Pull Request to skip a required check. Please can you provide authorisation for the check to be skipped, or provide assistance as appropriate.

The check they wish to have dispensation on is core.

If you are providing dispensation on this occasion, please reply with:

@BHoMBot this is a DevOps instruction. I am authorising dispensation to be granted on check ref. 6304860759

[FraserGreenroyd]

@BHoMBot this is a DevOps instruction. I am authorising dispensation to be granted on check ref. 6304860759

[bhombot-ci]

@FraserGreenroyd I have now provided a passing check on reference 6304860759 as requested.

[FraserGreenroyd]

@BHoMBot check ready-to-merge

[bhombot-ci]

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

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There are 306 requests in the queue ahead of you.

Changes made

[FraserGreenroyd]

@BHoMBot check ready-to-merge

[bhombot-ci]

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

• ready-to-merge

There are 306 requests in the queue ahead of you.