v1.3.0 to fix multiple-definitions linker error

### Releases v1.3.0

1. Fix multiple-definitions linker error. 
2. Update examples for new STM32 core v2.3.0 
3. Add example [multiFileProject](examples/multiFileProject) and [multiFileProject_LAN8720](examples/multiFileProject_LAN8720) to demo for multiple-file project to avoid `multiple-definitions` linker error
4. Update `Packages' Patches`

Author: khoih-prog

README.md

@@ -71,6 +71,7 @@
 
 Please have a look at [HOWTO Fix `Multiple Definitions` Linker Error](#howto-fix-multiple-definitions-linker-error)
 
+For `Generic STM32F4 series` boards, such as STM32F407VE, using LAN8720, please use STM32 core v2.2.0 as breaking core v2.3.0 creates the compile error. Will fix in the near future.
 
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