Moved socials config to _data/socials.yml (alshedivat#2885)

Fixes alshedivat#2882, added support for
[scholar-icons](https://github.com/louisfacun/scholar-icons) and
[LeetCode](https://leetcode.com/).

---------

Signed-off-by: George Araújo <[email protected]>

_data/socials.yml

@@ -0,0 +1,51 @@
+# this file contains the social media links and usernames of the author
+# the commented lines are the default social media links supported by the template
+# the socials will be displayed in the order they are defined here
+
+# acm_id: # your dl.acm.org/profile/id
+# blogger_url: # your blogger URL
+# bluesky_url: # your bluesky URL
+# dblp_url: # your DBLP profile url
+# discord_id: # your discord id (18-digit unique numerical identifier)
+email: [email protected] # your email address
+# facebook_id: # your facebook id
+# flickr_id: # your flickr id
+# github_username: # your GitHub user name
+# gitlab_username: # your GitLab user name
+# ieee_id: # your ieeexplore.ieee.org/author/id
+inspirehep_id: 1010907 # Inspire HEP author ID
+# instagram_id: # your instagram id
+# kaggle_id: # your kaggle id
+# keybase_username: # your keybase user name
+# lastfm_id: # your lastfm id
+# lattes_id: # your ID on Lattes (Brazilian Lattes CV)
+# leetcode_id: # your LeetCode id
+# linkedin_username: # your LinkedIn user name
+# mastodon_username: # your mastodon instance+username in the format instance.tld/@username
+# medium_username: # your Medium username
+# orcid_id: # your ORCID ID
+# osf_id: # your OSF ID
+# pinterest_id: # your pinterest id
+# publons_id: # your ID on Publons
+# quora_username: # your Quora username
+# research_gate_profile: # your profile on ResearchGate
+rss_icon: true # set to true to show the RSS icon
+scholar_userid: qc6CJjYAAAAJ # your Google Scholar ID
+# scopus_id: # your profile on Scopus
+# semanticscholar_id: # your Semantic Scholar ID
+# spotify_id: # your spotify id
+# stackoverflow_id: # your stackoverflow id
+# telegram_username: # your Telegram user name
+# unsplash_id: # your unsplash id
+# wechat_qr: # filename of your wechat qr-code saved as an image (e.g., wechat-qr.png if saved to assets/img/wechat-qr.png)
+# whatsapp_number: # your WhatsApp number (full phone number in international format. Omit any zeroes, brackets, or dashes when adding the phone number in international format.)
+# wikidata_id: # your wikidata id
+# wikipedia_id: # your wikipedia id (Case sensitive)
+# work_url: # work page URL
+# x_username: # your X handle
+# youtube_id: # your youtube channel id (youtube.com/@<youtube_id>)
+# zotero_username: # your zotero username
+custom_social: # can be any name here other than the ones already defined above
+  logo: https://www.alberteinstein.com/wp-content/uploads/2024/03/cropped-favicon-192x192.png # can be png, svg, jpg
+  title: Custom Social
+  url: https://www.alberteinstein.com/

_includes/head.liquid

@@ -23,6 +23,7 @@
 
 <!-- Fonts & Icons -->
 <link defer rel="stylesheet" href="{{ '/assets/css/academicons.min.css' | relative_url | bust_file_cache }}">
+<link defer rel="stylesheet" href="{{ '/assets/css/scholar-icons.css' | relative_url | bust_file_cache }}">
 <link
   defer
   rel="stylesheet"