Add "bridge" purpose to Matrix Nim SDK

Signed-off-by: Jack S. <[email protected]>

Author: awtj8o81ryywg793

content/ecosystem/sdks/sdks.toml

@@ -694,7 +694,7 @@ maturity = "Obsolete"
 language = "Nim"
 licence = "GPL-3.0"
 repository = "https://github.com/dylhack/matrix-nim-sdk"
-purpose = ["client", "bot"]
+purpose = ["client", "bot", "bridge"]
 description = """
 A Matrix library for the client-server and appservice API's written in Nim!
 """