Multi-Line Text value in __Long description causes generation of .cs files with wrong syntax

[Antonytm]

Presence of Multi-Line

    Hint: __Long description
    Value: |
      Line 1
      Line 2
      Line 3

__Long description in serialization file

....
ID: "049c2604-7311-45a2-b05d-590dce623b89"
Parent: "049c2604-7311-45a2-b05d-590dce623b88"
Template: "049c2604-7311-45a2-b05d-590dce623b87"
Path: /sitecore/templates/Feature/MyFeature/MyTemplate
Languages:
- Language: en
  Fields:
  - ID: "049c2604-7311-45a2-b05d-590dce623b86"
    Hint: Title
    Value: Field that require long desciption
  - ID: "049c2604-7311-45a2-b05d-590dce623b85"
    Hint: __Long description
    Value: |
      Line 1
      Line 2
      Line 3
 ...     

causes the generation of the .cs file that could not be compiled due to syntax errors.

/// <summary>Line 1
Line 2
Line 3</summary>
[SitecoreField(FieldName = ...)]

[Antonytm]

Fix provided in this PR: #51