* initialized the plugin
* Added token field and notion svg icon
* added notion js client
* Added token authentication
* Added database query and retrieve operations
* Working on other operations of database and page
* Added archive page & get single property operations
* Resolved an issue & changed placeholders
* Added operations of block
* Added start cursor to page & database
* Added operations of user endpoint
* changed icon & cover from object to fields
* Updated documentation
