Number of Environments is limited to 30

**Describe the bug**
When you check the Environments list in the SETTINGS tab, you can only see at most 30 environments. This affects the validation of the file as it will highlight a valid environment when it is not in the first 30 environments.

**To Reproduce**
1. With a repository that has over 30 environments
2. Go to SETTINGS --> Environments

**Expected behavior**
It should show all the environments.

**Screenshots**

**Extension Version**
`v0.26.2`

**Additional context**
This should be fixed by the `paginate` method as used in this #110.