Adds java-cfenv framework #1031
                
     Merged
            
            
          
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This PR adds a new framework, Java CfEnv, which contributes the
java-cfenvlibrary for Spring Boot 3+ apps. This is the recommended replacement for Spring AutoReconfiguration which is deprecated.The Java CfEnv library will set the 'cloud' profile when used with the buildpack, which Spring AutoReconfiguration set explicitly.
Addresses #951