Add ResearchGate & Orcid social links

Closes #379.

Co-authored-by: @Nour002

awesome-cv.cls

@@ -303,10 +303,18 @@
 % Usage: \linkedin{<linked-in-nick>}
 \newcommand*{\linkedin}[1]{\def\@linkedin{#1}}
 
+% Defines writer's orcid (optional)
+% Usage: \orcid{<orcid-num>}
+\newcommand*{\orcid}[1]{\def\@orcid{#1}}
+
 % Defines writer's twitter (optional)
 % Usage: \twitter{<twitter handle>}
 \newcommand*{\twitter}[1]{\def\@twitter{#1}}
 
+% Defines writer's resarchgate (optional)
+% Usage: \researchgate{<researchgate-account>}
+\newcommand*{\researchgate}[1]{\def\@researchgate{#1}}
+
 % Defines writer's skype (optional)
 % Usage: \skype{<skype account>}
 \newcommand*{\skype}[1]{\def\@skype{#1}}
@@ -497,6 +505,12 @@
           \ifbool{isstart}{\setbool{isstart}{false}}{\acvHeaderSocialSep}%
           \href{https://www.linkedin.com/in/\@linkedin}{\faLinkedin\acvHeaderIconSep\@linkedin}%
         }%
+      \ifthenelse{\isundefined{\@orcid}}%
+        {}%
+        {%
+          \ifbool{isstart}{\setbool{isstart}{false}}{\acvHeaderSocialSep}%
+          \href{https://orcid.org/\@orcid}{\faOrcid\acvHeaderIconSep\@orcid}%
+        }%
       \ifthenelse{\isundefined{\@twitter}}%
         {}%
         {%
@@ -515,6 +529,12 @@
           \ifbool{isstart}{\setbool{isstart}{false}}{\acvHeaderSocialSep}%
           \href{https://www.reddit.com/user/\@reddit}{\faReddit\acvHeaderIconSep\@reddit}%
         }%
+      \ifthenelse{\isundefined{\@researchgate}}%
+        {}%
+        {%
+          \ifbool{isstart}{\setbool{isstart}{false}}{\acvHeaderSocialSep}%
+          \href{https://www.researchgate.net/profile/\@researchgate}{\faResearchgate\acvHeaderIconSep\@researchgate}%
+        }%
       \ifthenelse{\isundefined{\@xing}}%
         {}%
         {%