Added gitreleasemanager configuration

GitReleaseManager.yaml

@@ -0,0 +1,25 @@
+ create:
+   include-footer: true | false
+   footer-heading: Where to get it
+   footer-content: You can download this release from [nuget](https://nuget.org/packages/Cake.Transifex/{milestone}
+   footer-includes-milestone: true
+   milestone-replace-text: '{milestone}'
+ export:
+   include-created-date-in-title: true
+   created-date-string-format: yyyy-MM-dd
+   perform-regex-removal: true
+   regex-text: '### Where to get it(\r\n)*You can .*\)'
+   multiline-regex: true
+issue-labels-include:
+ - Breaking Change
+ - Bug
+ - Feature
+ - Improvement
+ - Documentation
+issue-labels-exclude:
+ - Internal Refactoring
+ - Build
+issue-labels-alias:
+ - name: Documentation
+   header: Documentation
+   plural: Documentation