[docs] init

docs/actions/actions.md

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+# Available Actions:
+
+# Print
+Description: When triggered prints the configured message to stdout  
+Values:
+- **message**
+	- Type: string
+	- Descr: Message that should be printed
+	- Default: ""
+
+### Timeout
+Description: When triggered waits given duration before continuing with next stage  
+Values:
+- **duration**
+	- Type: int
+	- Descr: duration in seconds
+	- Default: 0
+
+# Command
+Description: When triggered executes given command  
+Values:
+- **command**
+	- Type: string
+	- Descr: command to execute
+	- Default: 
+- **args**
+	- Type: string[]
+	- Descr: args
+	- Default: 
+
+### Shutdown
+Description: When triggered shuts down the machine  
+Values:
+