feat(dot_leetcode): add initial workspace configuration files

dot_leetcode/workspaces/default/config.json

@@ -0,0 +1,7 @@
+{
+  "workDir": "/home/prad/Code/github.com/prdlk/leetcode/work/1",
+  "lang": "python3",
+  "site": "leetcode.com",
+  "editor": "nvim",
+  "syncRepo": "https://github.com/prdlk/leetcode.git"
+}