feat(plugins/community/poopmap): add poopmap plugin support (#675)

source/plugins/poopmap/README.md

@@ -0,0 +1,53 @@
+### 💩 PoopMap plugin
+
+The *poopmap* plugin displays statistics from your [PoopMap](https://poopmap.net) account
+
+<table>
+  <td align="center">
+    <img src="https://github.com/matievisthekat/matievisthekat/blob/master/metrics.plugin.poopmap.svg">
+    <img width="900" height="1" alt="">
+  </td>
+</table>
+
+<details>
+  <summary>💬 Obtaining a PoopMap token</summary>
+
+First, install the PoopMap app ([iOS](https://itunes.apple.com/us/app/poop-map/id1303269455?mt=8)/[Android](https://play.google.com/store/apps/details?id=net.poopmap)) and create an account.
+
+Navigate to your profile in the app
+
+<div align="center">
+  <img src="https://user-images.githubusercontent.com/45036977/143533812-c2776bcc-1fda-441e-bc96-cf21d4c69ca1.jpg" width="150" />
+</div>
+
+Tap "Share Profile" in the top right
+
+<div align="center">
+  <img src="https://user-images.githubusercontent.com/45036977/143533849-b7e03b4d-2903-4339-bbb7-e1fc0ea9724e.jpg" width="150" />
+</div>
+
+Tap "Copy to Clipboard" the copy the link to your clipboard
+
+<div align="center">
+  <img src="https://user-images.githubusercontent.com/45036977/143533856-f4a9fc0d-7bde-48c2-b579-e8ee91804d78.jpg" width="150" />
+</div>
+
+You should have something like `Haha, check out the places I've pooped on Poop Map https://api.poopmap.net/map?token=xxxxxxxxxx` copied.
+
+Extract the `token` query paramater from the link
+
+You now have your PoopMap token! This token will not expire and it can only access public details.
+</details>
+
+#### ℹ️ Examples workflows
+
+[➡️ Available options for this plugin](metadata.yml)
+
+```yaml
+- uses: lowlighter/metrics@latest
+  with:
+    # ... other options
+    plugin_poopmap: yes
+    plugin_poopmap_token: ${{ secrets.POOPMAP_TOKEN }}      # Required
+    plugin_poopmap_days: 7                                  # Display last week stats
+```