Init contributing guide

CONTRIBUTING.md

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+# Contributing
+## Participating in CODIUM Feature Template Process
+### Document Format
+- Choose the topic that you would like to template to (Django, Angular ...)
+- Create a new directory inside that topic and make sure that directory name is kebab-case.
+- The template would required a `README.md` file to explain about your feature
+- `README.md` format
+```
+# Description
+- This section is required
+- Write the description of what your function does
+# Required Packages
+- This section is required
+- This should be a list of package that required to run your feature
+
+* If you have more section feel free to add from here
+```
+
+### Process
+- Request a review: Initiate a pull request to the [CODIUM Feature Templates](https://github.com/C0D1UM/feature-templates) when proposed a change or new feature, then assign the review from someone in tech council team. When everything looks good, the pull request will be merged.