chore: add the readme.md file for the generator

[ayushnau]

Changes Added.

1. added the readme.md file for the generator.

Related issue(s)

Related to: https://github.com/asyncapi/generator/issues/1044

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 761be0e22fa457c160ce0039a3d10711a07f84c0

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[aeworxet]

@asyncapi/bounty_team

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[ayushnau]

/rtm

[derberg]

/rtm