Update bicep generator to use bicep-types and new contract (#7506)

Update bicep generator to use bicep-types and new contract

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Fixes: #issue_number

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Signed-off-by: sk593 <shruthikumar@microsoft.com>

hack/bicep-types-radius/src/generator/src/cmd/generate.ts

@@ -23,6 +23,7 @@ import { TypeFile, buildIndex, readTypesJson, writeIndexJson, writeIndexMarkdown
 import { GeneratorConfig, getConfig } from '../config';
 import * as markdown from '@ts-common/commonmark-to-markdown'
 import * as yaml from 'js-yaml'
+import { exec } from 'child_process';
 import { copyRecursive, executeSynchronous, getLogger, lowerCaseCompare, logErr, logOut, ILogger, defaultLogger, executeCmd, findRecursive } from '../utils';
 
 const rootDir = `${__dirname}/../../../../`;