Add release-please configuration

[Ndiritu]

We want:

• release please header file (yaml .github/release-please.yml)
• release please manifest (json .release-please-manifest.json)
• release please config (json release-please-config.json)
• changelog keep a changelog header and unreleased information to be removed
• contributing to be updated with commit formatting instructions
• delete any version bump scripts
• files where the version needs to be updated to be updated with the special comments for release please

Sample config: microsoftgraph/msgraph-beta-sdk-java#952

[baywet]

(just made sure the RP app is installed on this repo)

[baywet]

To do so for other repos:

1. JIT into the repo
2. In a separate tab, go to the marketplace app
3. Click "configure"
4. Select Microsoft
5. Select the target repo in the drop down
6. click "update access"