Merge branch 'Arul-master-patch-54636' into 'master'

Add Contribution Process file

See merge request docs/developer-guide!30

Documentation/source/Readme/Contribution Process

+Contribution Process
+####################
+* Preparations
+* Downloading Code
+* Committing Code
+* Creating a Pull Request
+* Building Access Control
+* Reviewing Code
+
+Preparations
+************
+* Install, configure, and use Git. For details, visit https://gitee.com/help/categories/43.
+* Register an SSH public key. For details, visit https://gitee.com/help/articles/4181.
+* Find the repository that you are interested in on the code hosting platform of OpenHarmony.
+
+Downloading Code
+****************
+
+Forking a Code Branch from the Cloud
+************************************
+#. Find and open the homepage of the repository.
+#. Click the Fork button in the upper right corner, and create an individual cloud fork branch as prompted.
+
+Downloading the Fork Repository to the Local Host
+*************************************************
+
+Perform the following steps to download the code in the repository to your computer:
+
+#. Create a local working directory.
+A local working directory is used for searching and managing local code.
+
+   mkdir ${your_working_dir}
+
+Parse the generated XML data from doxygen to generate the traceability matrix.
+
+#. Clone the remote repository to the local host.
+* You can copy the address of the remote repository on the repository page.
+* Run the following command on the local host:
+
+   git clone $remote_link
+
+Using the repo Tool to Download Code Repositories in Batches
+************************************************************
+* Download the repo tool. (For details, see https://gitee.com/help/articles/4316.)
+
+   curl https://gitee.com/oschina/repo/raw/fork_flow/repo-py3 > /usr/local/bin/repo
+   chmod a+x /usr/local/bin/repo
+   pip install -i https://pypi.tuna.tsinghua.edu.cn/simple requests
+
+* Download code repositories. (There is no repo branch parameter.)
+   repo init -u https://gitee.com/openharmony/manifest.git -b master
+   repo sync -c
+
+Committing Code
+***************
+Committing a Repository (git clone)
+===================================
+
+#. Update the local branch.
+
+   git fetch origin
+   git checkout master  
+   git pull --rebase
+
+Update the local debugging branch (myfeature branch) based on the remote master branch.
+
+   git branch myfeature origin/master
+   git checkout myfeature
+Then, edit and modify the code in the myfeature branch
+
+#. Commit the changes in the local working directory.
+
+   git add .
+   git commit -m "Reason" 
+
+You may continue to edit and test more content after the previous commit. You can use commit --amend to commit these changes.
+
+#. Push the changes to your remote directory.
+If you plan to review (or just establish a remote backup of your work), push the branch to your fork repository:
+
+   git push -f origin myfeature
+
+Committing Multiple Repositories (repo init/sync)
+*************************************************
+
+
+