chore: Support for determining spec support for the repo (open-feature#270)

Signed-off-by: Justin Abrahms <[email protected]>
Signed-off-by: Artyom Tonoyan <[email protected]>

Author: justinabrahms

.gitignore

@@ -352,3 +352,5 @@ ASALocalRun/
 # integration tests
 test/OpenFeature.E2ETests/Features/evaluation.feature
 test/OpenFeature.E2ETests/Features/evaluation.feature.cs
+cs-report.json
+specification.json

.specrc

@@ -0,0 +1,5 @@
+[spec]
+file_extension=cs
+multiline_regex=\[Specification\((?P<innards>.*?)\)\]
+number_subregex=([\d.]+)
+text_subregex=,\s+"(.*)"