Add plugin projects (#13)

* Add plugin projects

* Add images for readme

src/plugins/projects/index.mjs

@@ -0,0 +1,58 @@
+//Setup
+  export default async function ({login, graphql, q}, {enabled = false} = {}) {
+    //Plugin execution
+      try {
+        //Check if plugin is enabled and requirements are met
+          if ((!enabled)||(!q.projects))
+            return null
+        //Parameters override
+          let {"projects.limit":limit = 4} = q
+          //Limit
+            limit = Math.max(1, Math.min(100, Number(limit)))
+        //Retrieve contribution calendar from graphql api
+          const {user:{projects}} = await graphql(`
+              query Projects {
+                user(login: "${login}") {
+                  projects(last: ${limit}, states: OPEN, orderBy: {field: UPDATED_AT, direction: DESC}) {
+                    totalCount
+                    nodes {
+                      name
+                      updatedAt
+                      progress {
+                        doneCount
+                        inProgressCount
+                        todoCount
+                        enabled
+                      }
+                    }
+                  }
+                }
+              }
+            `
+          )
+        //Iterate through projects and format them
+          const list = []
+          for (const project of projects.nodes) {
+            //Format date
+              const time = (Date.now()-new Date(project.updatedAt).getTime())/(24*60*60*1000)
+              let updated = project.updatedAt
+              if (time < 1)
+                updated = "less than 1 day ago"
+              else if (time < 30)
+                updated = `${Math.floor(time)} day${time >= 2 ? "s" : ""} ago`
+              else
+                updated = new Date(project.updatedAt).toDateString().substring(4)
+            //Format progress
+              const {enabled, todoCount:todo, inProgressCount:doing, doneCount:done} = project.progress
+            //Append
+              list.push({name:project.name, updated, progress:{enabled, todo, doing, done, total:todo+doing+done}})
+          }
+        //Results
+          return {list, totalCount:projects.totalCount}
+      }
+    //Handle errors
+      catch (error) {
+        console.debug(error)
+        throw {error:{message:`An error occured`}}
+      }
+  }