feat(create-pr): Enable branch creation before creating PR (#719)

Author: jacklu97

README.md

@@ -140,6 +140,17 @@ The following parameters can be used for additional control over when it is safe
 ### [create-pr](.github/workflows/create-pr.yml)
 
 - Opens a pull request.
+- Can create a new branch and commit changes
+
+|      Parameter      |                                                 Description                                                 |     Default value     | Required |
+| :-----------------: | :---------------------------------------------------------------------------------------------------------: | :-------------------: | :------: |
+|        title        |                                               An issue title                                                |          N/A          |    ✔️    |
+|        body         |                                            Description of the PR                                            |          N/A          |    ✔️    |
+|        base         |                                   Base ref to initiate pull request onto                                    |          N/A          |    ❌    |
+|     branch_name     | Name of the branch to be created. Use this parameter if you want the helper to create a new branch for you. |          N/A          |    ❌    |
+|   commit_message    |   Text used when creating a commit if branch_name is given. Similar to `git commit -m "<commit_message>"`   | Automated PR creation |    ❌    |
+|        head         |        Head ref to initiate pull request from. If branch_name is provided it'll be the value of head        |          N/A          |    ❌    |
+| return_full_payload |             Return full payload from GitHub rather than a trimmed-down version of the response              |          N/A          |    ❌    |
 
 ### [create-project-card](.github/workflows/create-project-card.yml)
 

action.yml

@@ -160,6 +160,13 @@ inputs:
   packages:
     description: 'A list of dependencies inside package.json'
     required: false
+  branch_name:
+    description: 'The name of the branch to create'
+    required: false
+  commit_message:
+    description: 'The commit message to use'
+    required: false
+    default: 'Automated PR creation'
 outputs:
   output:
     description: 'The output of the helper'