get "flux get" output in json/yaml format

[samarth96]

It will be good to give output of flux get all/hr etc in json or yaml format

Let say here,

> NAME            	REVISION	     SUSPENDED	READY  	MESSAGE                          
> abc  	                  v2.0.12 	                  False    	         True   	Release reconciliation succeeded	
> xyz           	    	                                  False    	                         Unknown	Reconciliation in progress 
> mno          	        	                          False    	                         Unknown	Reconciliation in progress      

Here to validate if all hrs are up , it is not possible to put common logic

If i want to check status of each hr and wait until it is completed,
If we split eachline based on space, 2nd and 3rd rows are having empty revision ( since which will give diff result )

If we get some json or yaml output of the same version, it will be easier

i tried "flux export", but this doesnt give status details
In other hand , I don't want to use kubectl commands since kubectl resouce creation may take time and happens asynchronously