Add examples of how a simple list and watch is built using client-go

[krmayankk]

• basically how to use resourceVersion correctly. Sorry if this is documented somewhere else ?
• From my understanding, we should always do a list and get the resourceVersion from the list
• then use a watch with the above resourceVersion
• if the watch fails, can we restart the watch with same resourceVersion
• if the watch succeeds , how do i get the updated resourceVersion to do the watch again ?
• I know if between list and watch , too much time elapses, the buffer can become full, in which case, watch would fail, i guess, do we need to list again there ?

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[thkoch2001]

/lifecycle frozen