Build docs and upload to gh-pages (#1232)

For #889

docs/Doxyfile

@@ -0,0 +1,44 @@
+PROJECT_NAME           = "Clio"
+PROJECT_LOGO           = ${SOURCE}/docs/img/xrpl-logo.svg
+PROJECT_NUMBER         = ${DOC_CLIO_VERSION}
+PROJECT_BRIEF          = The XRP Ledger API server.
+
+EXTRACT_ALL            = NO
+EXTRACT_PRIVATE        = NO
+EXTRACT_PACKAGE        = YES
+EXTRACT_STATIC         = YES
+EXTRACT_LOCAL_CLASSES  = NO
+EXTRACT_ANON_NSPACES   = NO
+
+SORT_MEMBERS_CTORS_1ST = YES
+
+INPUT                  = ${SOURCE}/src
+EXCLUDE_SYMBOLS        = ${EXCLUDES}
+RECURSIVE              = YES
+HAVE_DOT               = ${USE_DOT}
+
+QUIET                  = YES
+WARNINGS               = ${LINT}
+WARN_NO_PARAMDOC       = ${LINT}
+WARN_IF_INCOMPLETE_DOC = ${LINT}
+WARN_IF_UNDOCUMENTED   = ${LINT}
+
+GENERATE_LATEX         = NO
+GENERATE_HTML          = YES
+
+SORT_MEMBERS_CTORS_1ST = YES
+
+GENERATE_TREEVIEW      = YES
+DISABLE_INDEX          = NO
+FULL_SIDEBAR           = NO
+HTML_HEADER            = ${SOURCE}/docs/doxygen-awesome-theme/header.html
+HTML_EXTRA_STYLESHEET  = ${SOURCE}/docs/doxygen-awesome-theme/doxygen-awesome.css \
+                         ${SOURCE}/docs/doxygen-awesome-theme/doxygen-awesome-sidebar-only.css \
+                         ${SOURCE}/docs/doxygen-awesome-theme/doxygen-awesome-sidebar-only-darkmode-toggle.css 
+HTML_EXTRA_FILES       = ${SOURCE}/docs/doxygen-awesome-theme/doxygen-awesome-darkmode-toggle.js \
+                         ${SOURCE}/docs/doxygen-awesome-theme/doxygen-awesome-interactive-toc.js
+
+HTML_COLORSTYLE        = LIGHT
+HTML_COLORSTYLE_HUE    = 209
+HTML_COLORSTYLE_SAT    = 255
+HTML_COLORSTYLE_GAMMA  = 113