Created API (markdown)

API.md

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+# API
+
+:8073/metrics
+ ***
+{"openwebrx": 
+{"users": 2}, 
+"aprs": 
+{"decodes": {"unknown": {"aprs": {"count": 0}}, 
+"2m": {"aprs": {"count": 364}}, 
+....
+"wsjt": 
+{"decodes": 
+{"40m": {"FT8": {"count": 40484}, 
+"FT4": {"count": 1637}, 
+"WSPR": {"count": 170}}, 
+"2m": {"FT4": {"count": 16}, "FT8": {"count": 46}}, 
+"80m": {"FT4": {"count": 4}, "FT8": {"count": 320}}, 
+"20m": {"FT8": {"count": 385}, "FT4": {"count": 21}}}}}
+***