feat: include < polycule > into the client list

Signed-off-by: The one with the braid <[email protected]>

Author: TheOneWithTheBraid

content/ecosystem/clients/polycule.md

@@ -0,0 +1,29 @@
++++
+title = "< polycule >"
+template = "ecosystem/client.html"
+[extra]
+thumbnail = "polycule.svg"
+maintainer = "The one with the braid"
+licence = "EUPL-1.2"
+language = "Flutter"
+latest_release = "2025-03-18"
+maturity = "Beta"
+repo = "https://gitlab.com/polycule_client/polycule/"
+website = "https://polycule.im"
+featured = false
+[extra.features]
+e2ee = true
+spaces = false
+voip_1to1 = false
+voip_jitsi = true
+threads = false
+sso = true
+multi_account = true
+multi_language = true
+[extra.packages]
+f_droid.app_id = "business.braid.polycule"
+webapp = "https://polycule.im/web"
+other_linux_link = "https://polycule.im/#download"
++++
+
+A geeky and efficient \[matrix\] client for power users.