Add Doxygen configuration

Author: ladvoc

.gitignore

@@ -36,3 +36,6 @@ coverage.info
 coverage_report/
 
 .vscode
+
+# Doxygen
+docs/output

docs/Doxyfile

@@ -0,0 +1,20 @@
+PROJECT_NAME           = LiveKit ESP-32 SDK
+OUTPUT_DIRECTORY       = ./output
+OPTIMIZE_OUTPUT_FOR_C  = YES
+WARN_IF_UNDOCUMENTED   = YES
+INPUT                  = ../README.md \
+                         ../docs \
+                         ../components/livekit/include \
+                         ../components/livekit_sandbox/include
+USE_MDFILE_AS_MAINPAGE = ../README.md
+FILE_PATTERNS          = *.h *.md
+EXTRACT_ALL            = YES
+RECURSIVE              = YES
+JAVADOC_AUTOBRIEF      = YES
+GENERATE_LATEX         = NO
+GENERATE_HTML          = YES
+TIMESTAMP              = YES
+INLINE_SIMPLE_STRUCTS  = YES
+TYPEDEF_HIDES_STRUCT   = YES
+SHOW_FILES             = NO
+LAYOUT_FILE            = ./layout.xml

docs/layout.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<doxygenlayout version="2.0">
+  <!-- Generated by doxygen 1.14.0 -->
+  <!-- Navigation index tabs for HTML output -->
+  <navindex>
+    <tab type="mainpage" visible="yes" title="Introduction"/>
+    <tab type="topics" visible="yes" title="API Reference" intro=""/>
+    <tab type="pages" visible="yes" title="Guides" intro=""/>
+  </navindex>
+</doxygenlayout>