aws-codebuild: missing CodeBuild image types for newly supported environment types

### Describe the feature

The CodeBuild CDK [code](https://github.com/aws/aws-cdk/blob/ddaad470c5da4ea85789dc53a27af58832ae0e1c/packages/aws-cdk-lib/aws-codebuild/lib/project.ts#L2032) needs to add new image types to match newly supported environment types: `LINUX_EC2`, `ARM_EC2` and `WINDOWS_EC2`.

### Use Case

Users can not create project with fleet configured with `LINUX_EC2`, `ARM_EC2` or `WINDOWS_EC2` environment type using CDK.

### Proposed Solution

Add new image types `LINUX_EC2`, `ARM_EC2` and `WINDOWS_EC2` into [file](https://github.com/aws/aws-cdk/blob/ddaad470c5da4ea85789dc53a27af58832ae0e1c/packages/aws-cdk-lib/aws-codebuild/lib/project.ts#L2032).

### Other Information

_No response_

### Acknowledgements

- [ ] I may be able to implement this feature request
- [ ] This feature might incur a breaking change

### CDK version used

Any

### Environment details (OS name and version, etc.)

Any

Open packages/aws-cdk-lib/aws-codebuild/lib/project.ts at the linked location and inspect the existing image-type definitions alongside the supported environment types. Done means the three requested LINUX_EC2, ARM_EC2, and WINDOWS_EC2 image types are available so users can create projects with those fleet environment types.

Written by the indexing model from the issue text.