feat: Implement LDAP search for mail and GH fields

Resolves #23 (closed)

Implements LDAP search via uid and githubId. Order of operations was modified to search LDAP first for both endpoints, then fetch from the current accounts-api endpoint for data if the LDAP returns a success.

src/main/java/org/eclipsefoundation/profile/api/models/AccountsProfileData.java

@@ -36,11 +36,6 @@ public abstract class AccountsProfileData {
 
     public abstract Map<String, PublisherAgreement> getPublisherAgreements();
 
-    @Nullable
-    public abstract String getMail();
-
-    public abstract String getGithubHandle();
-
     public abstract String getTwitterHandle();
 
     public abstract String getOrg();
@@ -98,10 +93,6 @@ public abstract class AccountsProfileData {
 
         public abstract Builder setPublisherAgreements(Map<String, PublisherAgreement> agreements);
 
-        public abstract Builder setMail(@Nullable String mail);
-
-        public abstract Builder setGithubHandle(String handle);
-
         public abstract Builder setTwitterHandle(String handle);
 
         public abstract Builder setOrg(String org);