v1.1.0 for LwIP W6100 Ethernet

#### Releases v1.1.0

1. Initial coding to port [ESPAsync_WiFiManager](https://github.com/khoih-prog/ESPAsync_WiFiManager) to ESP32_S2/S3/C3 boards using `LwIP W6100 Ethernet`. Sync with [AsyncESP32_SC_W5500_Manager v1.1.0](https://github.com/khoih-prog/AsyncESP32_SC_W5500_Manager)
2. Use `allman astyle`

Author: khoih-prog

CONTRIBUTING.md

@@ -0,0 +1,82 @@
+## Contributing to AsyncESP32_SC_W6100_Manager
+
+### Reporting Bugs
+
+Please report bugs in AsyncESP32_SC_W6100_Manager if you find them.
+
+However, before reporting a bug please check through the following:
+
+* [Existing Open Issues](https://github.com/khoih-prog/AsyncESP32_SC_W6100_Manager/issues) - someone might have already encountered this.
+
+If you don't find anything, please [open a new issue](https://github.com/khoih-prog/AsyncESP32_SC_W6100_Manager/issues/new).
+
+---
+
+### How to submit a bug report
+
+Please ensure to specify the following:
+
+* Arduino IDE version (e.g. 1.8.19) or Platform.io version
+* Board Type (e.g. ESP32S3_DEV, ESP32S2_DEV, ESP32C3_DEV)
+* Board Core Version (e.g. ESP32 core v2.0.6)
+* Contextual information (e.g. what you were trying to achieve)
+* Simplest possible steps to reproduce
+* Anything that might be relevant in your opinion, such as:
+  * Operating system (Windows, Ubuntu, etc.) and the output of `uname -a`
+  * Network configuration
+
+
+Please be educated, civilized and constructive as you've always been. Disrespective posts against [GitHub Code of Conduct](https://docs.github.com/en/site-policy/github-terms/github-event-code-of-conduct) will be ignored and deleted.
+
+
+### Example
+
+```
+Arduino IDE version: 1.8.19
+ESP32S3_DEV board
+ESP32 core v2.0.6
+OS: Ubuntu 20.04 LTS
+Linux xy-Inspiron-3593 5.15.0-58-generic #64~20.04.1-Ubuntu SMP Fri Jan 6 16:42:31 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
+
+Context:
+I encountered a crash while using this library
+Steps to reproduce:
+1. ...
+2. ...
+3. ...
+4. ...
+```
+
+### Additional context
+
+Add any other context about the problem here.
+
+---
+
+### Sending Feature Requests
+
+Feel free to post feature requests. It's helpful if you can explain exactly why the feature would be useful.
+
+There are usually some outstanding feature requests in the [existing issues list](https://github.com/khoih-prog/AsyncESP32_SC_W6100_Manager/issues?q=is%3Aopen+is%3Aissue+label%3Aenhancement), feel free to add comments to them.
+
+---
+
+### Sending Pull Requests
+
+Pull Requests with changes and fixes are also welcome!
+
+Please use the `astyle` to reformat the updated library code as follows (demo for Ubuntu Linux)
+
+1. Change directory to the library GitHub
+
+```
+xy@xy-Inspiron-3593:~$ cd Arduino/xy/AsyncESP32_SC_W6100_Manager_GitHub/
+xy@xy-Inspiron-3593:~/Arduino/xy/AsyncESP32_SC_W6100_Manager_GitHub$
+```
+
+2. Issue astyle command
+
+```
+xy@xy-Inspiron-3593:~/Arduino/xy/AsyncESP32_SC_W6100_Manager_GitHub$ bash utils/restyle.sh
+```
+