doc: Bluetooth: Audio: Remake gaf.svg to graphviz

Remake the Generic audio framework (GAF) figure to a graphviz version.
This makes it easier to modify it directly in the .rst file.

This also adds the missing GMAP/GMAS.

Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>

doc/connectivity/bluetooth/api/audio/bluetooth-le-audio-arch.rst

@@ -48,11 +48,151 @@ audio streams or broadcast (unconnected) audio streams.
 
 GAF mandates the use of the LC3 codec, but also supports other codecs.
 
-.. figure:: img/gaf.svg
-   :align: center
-   :alt: Generic Audio Framework
+.. graphviz::
+   :caption: Generic Audio Framework (GAF)
 
-   Generic Audio Framework
+   digraph gaf {
+      node [shape=record];
+      edge [style=invis];
+      compound=true;
+      nodesep=0.1;
+
+      subgraph hap_layer {
+         cluster=true;
+         label="HAP";
+         HAS;
+         BAS [style=dashed];
+         IAS [style=dashed];
+      }
+
+      subgraph pbp_layer {
+         cluster=true;
+         label="PBP";
+         PBS[style=invis]; // Make it possible to treat PBP like the others
+      }
+
+      subgraph tmap_layer {
+         cluster=true;
+         label="TMAP";
+         TMAS;
+      }
+
+      subgraph gmap_layer {
+         cluster=true;
+         label="GMAP";
+         GMAS;
+      }
+
+      subgraph gaf_layer {
+         cluster=true;
+         label="Generic Audio Framework";
+
+         subgraph transition_and_coordination_control_layer {
+            cluster=true;
+            label="Transition and Coordination Control";
+            style=dashed;
+
+            subgraph cap_layer {
+               cluster=true;
+               style=solid;
+               label="CAP";
+               CAS;
+            }
+
+            subgraph csip_layer {
+               cluster=true;
+               style=solid;
+               label="CSIP";
+               CSIS;
+            }
+         }
+
+         subgraph stream_control_layer {
+            cluster=true;
+            label="Stream Control";
+            style=dashed;
+
+            subgraph bap_layer {
+               cluster=true;
+               label="BAP";
+               style=solid;
+               PACS [style=dashed];
+               ASCS [style=dashed];
+               BASS [style=dashed];
+            }
+         }
+
+         subgraph content_control_layer {
+            cluster=true;
+            label="Content Control";
+            style=dashed;
+
+            subgraph mcp_layer {
+               cluster=true;
+               label="MCP";
+               style=solid;
+               MCS;
+            }
+
+            subgraph ccp_layer {
+               cluster=true;
+               label="CCP";
+               style=solid;
+               TBS;
+            }
+         }
+
+         subgraph rendering_and_capture_control_layer {
+            cluster=true;
+            label="Rendering and Capture Control";
+            style=dashed;
+
+            subgraph micp_layer {
+               cluster=true;
+               label="MICP";
+               style=solid;
+               MICS;
+               MICP_AICS [style=dashed];
+            }
+
+            subgraph vcp_layer {
+               cluster=true;
+               label="VCP";
+               style=solid;
+               VCS;
+               VOCS [style=dashed];
+               VCP_AICS [style=dashed];
+            }
+         }
+      }
+
+      HAS -> CAS;
+      PBS -> CAS;
+      TMAS -> CAS;
+      GMAS -> CAS;
+
+      CAS -> MCS;
+      CAS -> TBS;
+      CAS -> ASCS;
+      CAS -> PACS;
+      CAS -> BASS;
+      CAS -> MICS;
+      CAS -> MICP_AICS;
+      CAS -> VCS;
+      CAS -> VOCS;
+      CAS -> VCP_AICS;
+
+      CSIS -> MCS;
+      CSIS -> TBS;
+      CSIS -> ASCS;
+      CSIS -> PACS;
+      CSIS -> BASS;
+      CSIS -> MICS;
+      CSIS -> MICP_AICS;
+      CSIS -> VCS;
+      CSIS -> VOCS;
+      CSIS -> VCP_AICS;
+   }
 
 The top-level profiles TMAP and HAP are not part of the GAF, but rather provide
 top-level requirements for how to use the GAF.