docs: use doxygen directly and drop breathe (#2739)

docs/Doxyfile

@@ -61,13 +61,13 @@ PROJECT_BRIEF          = "Sunshine is a Gamestream host for Moonlight."
 # pixels and the maximum width should not exceed 200 pixels. Doxygen will copy
 # the logo to the output directory.
 
-PROJECT_LOGO           = ../sunshine.png
+PROJECT_LOGO = ../sunshine.png
 
 # With the PROJECT_ICON tag one can specify an icon that is included in the tabs
 # when the HTML document is shown. Doxygen will copy the logo to the output
 # directory.
 
-PROJECT_ICON           =
+PROJECT_ICON = ../sunshine.ico
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) path
 # into which the generated documentation will be written. If a relative path is
@@ -1328,7 +1328,7 @@ IGNORE_PREFIX          =
 # If the GENERATE_HTML tag is set to YES, doxygen will generate HTML output
 # The default value is: YES.
 
-GENERATE_HTML          = NO
+GENERATE_HTML = YES
 
 # The HTML_OUTPUT tag is used to specify where the HTML docs will be put. If a
 # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
@@ -1336,14 +1336,14 @@ GENERATE_HTML          = NO
 # The default directory is: html.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_OUTPUT            = doxyhtml
+HTML_OUTPUT = doxygen/doxyhtml
 
 # The HTML_FILE_EXTENSION tag can be used to specify the file extension for each
 # generated HTML page (for example: .htm, .php, .asp).
 # The default value is: .html.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_FILE_EXTENSION    = .html
+HTML_FILE_EXTENSION     = .html
 
 # The HTML_HEADER tag can be used to specify a user-defined HTML header file for
 # each generated HTML page. If the tag is left blank doxygen will generate a
@@ -1426,7 +1426,7 @@ HTML_EXTRA_FILES       =
 # The default value is: AUTO_LIGHT.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_COLORSTYLE        = AUTO_LIGHT
+HTML_COLORSTYLE = TOGGLE
 
 # The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
 # will adjust the colors in the style sheet and background images according to
@@ -1553,7 +1553,7 @@ DOCSET_FEEDURL         =
 # The default value is: org.doxygen.Project.
 # This tag requires that the tag GENERATE_DOCSET is set to YES.
 
-DOCSET_BUNDLE_ID       = org.doxygen.Project
+DOCSET_BUNDLE_ID = dev.lizardbyte.Sunshine
 
 # The DOCSET_PUBLISHER_ID tag specifies a string that should uniquely identify
 # the documentation publisher. This should be a reverse domain-name style
@@ -1561,13 +1561,13 @@ DOCSET_BUNDLE_ID       = org.doxygen.Project
 # The default value is: org.doxygen.Publisher.
 # This tag requires that the tag GENERATE_DOCSET is set to YES.
 
-DOCSET_PUBLISHER_ID    = org.doxygen.Publisher
+DOCSET_PUBLISHER_ID = dev.lizardbyte.Sunshine.documentation
 
 # The DOCSET_PUBLISHER_NAME tag identifies the documentation publisher.
 # The default value is: Publisher.
 # This tag requires that the tag GENERATE_DOCSET is set to YES.
 
-DOCSET_PUBLISHER_NAME  = Publisher
+DOCSET_PUBLISHER_NAME = LizardByte
 
 # If the GENERATE_HTMLHELP tag is set to YES then doxygen generates three
 # additional HTML index files: index.hhp, index.hhc, and index.hhk. The
@@ -2278,7 +2278,9 @@ MAN_LINKS              = NO
 # captures the structure of the code including all documentation.
 # The default value is: NO.
 
-GENERATE_XML           = YES
+# TODO: Sphinx/Breathe does not support Objective-C right now, so disable XML
+# https://github.com/breathe-doc/breathe/issues/129
+GENERATE_XML = NO
 
 # The XML_OUTPUT tag is used to specify where the XML pages will be put. If a
 # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
@@ -2286,7 +2288,7 @@ GENERATE_XML           = YES
 # The default directory is: xml.
 # This tag requires that the tag GENERATE_XML is set to YES.
 
-XML_OUTPUT             = doxyxml
+XML_OUTPUT = doxygen/doxyxml
 
 # If the XML_PROGRAMLISTING tag is set to YES, doxygen will dump the program
 # listings (including syntax highlighting and cross-referencing information) to
@@ -2540,7 +2542,7 @@ HIDE_UNDOC_RELATIONS   = YES
 # set to NO
 # The default value is: NO.
 
-HAVE_DOT               = YES
+HAVE_DOT = YES
 
 # The DOT_NUM_THREADS specifies the number of dot invocations doxygen is allowed
 # to run in parallel. When set to 0 doxygen will base this on the number of
@@ -2550,7 +2552,8 @@ HAVE_DOT               = YES
 # Minimum value: 0, maximum value: 32, default value: 0.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
-DOT_NUM_THREADS        = 0
+# TODO: On Windows, Doxygen hangs when creating dot graphs if this is set to 0
+DOT_NUM_THREADS = 1
 
 # DOT_COMMON_ATTR is common attributes for nodes, edges and labels of
 # subgraphs. When you want a differently looking font in the dot files that
@@ -2765,7 +2768,7 @@ DIR_GRAPH_MAX_DEPTH    = 1
 # The default value is: png.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
-DOT_IMAGE_FORMAT       = png
+DOT_IMAGE_FORMAT = svg
 
 # If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
 # enable generation of interactive SVG images that allow zooming and panning.
@@ -2777,7 +2780,7 @@ DOT_IMAGE_FORMAT       = png
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
-INTERACTIVE_SVG        = NO
+INTERACTIVE_SVG = YES
 
 # The DOT_PATH tag can be used to specify the path where the dot tool can be
 # found. If left blank, it is assumed the dot tool can be found in the path.