Libnetdata readmes learn (#14416)

* Add remaining libnetdata readmes to learn

* Move all libnetdata readmes in learn under Developer/libnetdata libraries except for the main README

* Add the moved array allocator

libnetdata/README.md

@@ -1,6 +1,10 @@
 <!--
 title: "libnetdata"
 custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/README.md
+sidebar_label: "libnetdata"
+learn_status: "Published"
+learn_topic_type: "Tasks"
+learn_rel_path: "Developers/libnetdata"
 -->
 
 # libnetdata

libnetdata/adaptive_resortable_list/README.md

@@ -4,7 +4,7 @@ custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/adapt
 sidebar_label: "Adaptive Re-sortable List (ARL)"
 learn_status: "Published"
 learn_topic_type: "Tasks"
-learn_rel_path: "Developers"
+learn_rel_path: "Developers/libnetdata libraries"
 -->
 
 # Adaptive Re-sortable List (ARL)

libnetdata/aral/README.md

@@ -1,6 +1,10 @@
 <!--
 title: "Array Allocator"
 custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/aral/README.md
+sidebar_label: "Array allocator"
+learn_status: "Published"
+learn_topic_type: "Tasks"
+learn_rel_path: "Developers/libnetdata libraries"
 -->
 
 # Array Allocator

libnetdata/avl/README.md

@@ -1,6 +1,10 @@
 <!--
 title: "AVL"
 custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/avl/README.md
+sidebar_label: "AVL"
+learn_status: "Published"
+learn_topic_type: "Tasks"
+learn_rel_path: "Developers/libnetdata libraries"
 -->
 
 # AVL

libnetdata/buffer/README.md

@@ -4,7 +4,7 @@ custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/buffe
 sidebar_label: "BUFFER library"
 learn_status: "Published"
 learn_topic_type: "Tasks"
-learn_rel_path: "Developers"
+learn_rel_path: "Developers/libnetdata libraries"
 -->
 
 # BUFFER

libnetdata/circular_buffer/README.md

@@ -1,6 +1,10 @@
 <!--
-title: "circular_buffer"
+title: "Circular Buffer"
 custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/circular_buffer/README.md
+sidebar_label: "Circular Buffer"
+learn_status: "Published"
+learn_topic_type: "Tasks"
+learn_rel_path: "Developers/libnetdata libraries"
 -->
 
 # Circular Buffer

libnetdata/config/README.md

@@ -4,7 +4,7 @@ custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/confi
 sidebar_label: "Netdata ini config files"
 learn_status: "Published"
 learn_topic_type: "Tasks"
-learn_rel_path: "Developers"
+learn_rel_path: "Developers/libnetdata libraries"
 -->
 
 # Netdata ini config files

libnetdata/dictionary/README.md

@@ -3,7 +3,7 @@ custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/dicti
 sidebar_label: "Dictionaries"
 learn_status: "Published"
 learn_topic_type: "Tasks"
-learn_rel_path: "Developers"
+learn_rel_path: "Developers/libnetdata libraries"
 -->
 
 # Dictionaries

libnetdata/ebpf/README.md

@@ -1,5 +1,13 @@
 <!--
+title "eBPF"
 custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/ebpf/README.md
+sidebar_label: "eBPF"
+learn_status: "Published"
+learn_topic_type: "Tasks"
+learn_rel_path: "Developers/libnetdata libraries"
 -->
 
+# eBPF library
+
+Netdata's eBPF library supports the [eBPF collector](https://github.com/netdata/netdata/blob/master/collectors/ebpf.plugin/README.md).
 

libnetdata/json/README.md

@@ -1,6 +1,10 @@
 <!--
 title: "json"
 custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/json/README.md
+sidebar_label: "json"
+learn_status: "Published"
+learn_topic_type: "Tasks"
+learn_rel_path: "Developers/libnetdata libraries"
 -->
 
 # json