docs-fr | concepts | cluster-administration | logging.md (#15244)

* Add docs/concepts/cluster-administration/logging.md

* Add depending examples

* Translate first 2 chapters

* Coorect the path to debug/counter-pod.yaml

Only the english versions can be directly referenced.

* translate last chapter and adjust to doc style guide

* Fix french ortographic and gramatical errors

* Fix french grammar and orthograph

content/fr/examples/debug/counter-pod.yaml

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: counter
+spec:
+  containers:
+  - name: count
+    image: busybox
+    args: [/bin/sh, -c,
+            'i=0; while true; do echo "$i: $(date)"; i=$((i+1)); sleep 1; done']