modules: add cpu module

doc/yambar-modules-cpu.5.scd

@@ -0,0 +1,42 @@
+yambar-modules-cpu(5)
+
+# NAME
+cpu - This module provides the CPU usage
+
+# TAGS
+
+[[ *Name*
+:[ *Type*
+:[ *Description*
+|  cpu
+:  range
+:  Current usage of the whole CPU in percent
+|  cpu<0..X>
+:  range
+:  Current usage of CPU core X in percent
+
+# CONFIGURATION
+
+[[ *Name*
+:[ *Type*
+:[ *Req*
+:[ *Description*
+|  interval
+:  int
+:  no
+:  Refresh interval of the CPU usage stats in ms (default=500). Cannot be less then 500 ms
+
+# EXAMPLES
+
+```
+bar:
+  left:
+    - cpu:
+        interval: 2500
+        content:
+          string: {text: "{cpu1}%"}
+```
+
+# SEE ALSO
+
+*yambar-modules*(5), *yambar-particles*(5), *yambar-tags*(5), *yambar-decorations*(5)