Modified doxygen style

Author: jay-tux

.gitignore

@@ -5,6 +5,9 @@ test/conan/*
 cov/*
 
 !**/.gitkeep
+!docs/doxygen.css
+!docs/doxygen_footer.html
+!docs/doxygen_header.html
 
 compile_flags.txt
 coverage.info

.gitmodules

@@ -1221,7 +1221,7 @@ HTML_FILE_EXTENSION    = .html
 # of the possible markers and block names see the documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_HEADER            =
+HTML_HEADER            = $(OUTDIR)/doxygen_header.html
 
 # The HTML_FOOTER tag can be used to specify a user-defined HTML footer for each
 # generated HTML page. If the tag is left blank doxygen will generate a standard
@@ -1231,7 +1231,7 @@ HTML_HEADER            =
 # that doxygen normally uses.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_FOOTER            =
+HTML_FOOTER            = $(OUTDIR)/doxygen_footer.html
 
 # The HTML_STYLESHEET tag can be used to specify a user-defined cascading style
 # sheet that is used by each HTML page. It can be used to fine-tune the look of
@@ -1243,7 +1243,7 @@ HTML_FOOTER            =
 # obsolete.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_STYLESHEET        =
+HTML_STYLESHEET        = $(OUTDIR)/doxygen.css
 
 # The HTML_EXTRA_STYLESHEET tag can be used to specify additional user-defined
 # cascading style sheets that are included after the standard style sheets