Add new status URL for GH, remove fingerprint logic from GH webhook code

To better target data and remove some outdated tracking methods, the previous fingerprint mechanism has been removed from the GH webhook code. Additionally, a new status URL matching the format git/eca/status/gh/{fullRepoUrl}/{prNumber} has been added to remove the need for a fingerprint.

src/main/java/org/eclipsefoundation/git/eca/api/models/GithubAccessToken.java

@@ -18,7 +18,9 @@ import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
 import com.google.auto.value.AutoValue;
 
 /**
- * @author martin
+ * Contains the information about the Github application access tokens
+ * 
+ * @author Martin Lowe
  *
  */
 @AutoValue
@@ -26,8 +28,9 @@ import com.google.auto.value.AutoValue;
 public abstract class GithubAccessToken {
 
     public abstract String getToken();
+
     public abstract LocalDateTime getExpiresAt();
-    
+
     public static Builder builder() {
         return new AutoValue_GithubAccessToken.Builder();
     }
@@ -36,6 +39,7 @@ public abstract class GithubAccessToken {
     @JsonPOJOBuilder(withPrefix = "set")
     public abstract static class Builder {
         public abstract Builder setToken(String token);
+
         public abstract Builder setExpiresAt(LocalDateTime expiresAt);
 
         public abstract GithubAccessToken build();