Update / rewrite of the ofxSvg addon to remove dependency on libTinySvg and libxml2. (#8266)

* Update / rewrite of the ofxSvg addon to remove dependency on libTinySvg.

* Fix atan2 and return path instead of string for windows.

* namespace for return type to address windows problems.

* filesystem path vs. string.

* remove ofx::svg namespace and replace with ofxSvg for easier compliance with Windows.

* fixes for filepath and string on windows.

* Copy and move functions.

* fix for fill-opacity and populating css values even if they wont be used.

* Updates for more path parsing support, text parsing, embedded images and deep copy

* more support for legacy transforms and more robust parsing.

* Extend ofNode for easier transform maintenance

* revert to string for filepath due to msys error. Override customDraw ofNode function.

* added offset for paths, for importing and exporting.

* custom optional class for legacy support.

* use ofNode as base

* svg parse example

* fixes for no stroke and adding elements

* save example

* inline documentation and more addImage functions

* added remove functionality and update svgSave example to use remove functions.

* fix for paths with all closed sub paths to use default winding mode of OF_POLY_WINDING_NONZERO with a function to set it differently.

Author: NickHardeman

addons/ofxSvg/addon_config.mk

@@ -16,8 +16,8 @@
 
 meta:
 	ADDON_NAME = ofxSvg
-	ADDON_DESCRIPTION = Addon for parsing svg files into ofPaths
-	ADDON_AUTHOR = Joshua Noble, maintained by OF Team
+	ADDON_DESCRIPTION = Addon for parsing, manipulating and saving svg files.
+	ADDON_AUTHOR = Nick Hardeman, original by Joshua Noble, maintained by OF Team
 	ADDON_TAGS = "svg"
 	ADDON_URL = http://github.com/openframeworks/openFrameworks
 
@@ -59,30 +59,3 @@ common:
 	# when parsing the file system looking for libraries exclude this for all or
 	# a specific platform
 	# ADDON_LIBS_EXCLUDE =
-
-osx:
-	ADDON_LIBS = libs/svgtiny/lib/macos/svgtiny.xcframework/macos-arm64_x86_64/libsvgtiny.a
-	ADDON_LIBS += libs/libxml2/lib/macos/libxml2.xcframework/macos-arm64_x86_64/libxml2.a
-
-ios:
-	ADDON_LIBS = libs/svgtiny/lib/ios/svgtiny.a
-	ADDON_LIBS += libs/libxml2/lib/ios/xml2.a
-
-linux64:
-	ADDON_LIBS = libs/svgtiny/lib/linux64/libsvgtiny.a
-	ADDON_LIBS += libs/libxml2/lib/linux64/libxml2.a
-
-linuxarmv6l:
-	ADDON_LIBS = libs/svgtiny/lib/linuxarmv6l/libsvgtiny.a
-	ADDON_LIBS += libs/libxml2/lib/linuxarmv6l/libxml2.a
-
-linuxarmv7l:
-	ADDON_LIBS = libs/svgtiny/lib/linuxarmv7l/libsvgtiny.a
-	ADDON_LIBS += libs/libxml2/lib/linuxarmv7l/libxml2.a
-
-linuxaarch64:
-	ADDON_LIBS = libs/svgtiny/lib/linuxaarch64/libsvgtiny.a
-	ADDON_LIBS += libs/libxml2/lib/linuxaarch64/libxml2.a
-
-msys2:
-	ADDON_PKG_CONFIG_LIBRARIES = libxml-2.0