fix: generate typescript types using camel case

[mledl]

Pull request type

Jira Link: INT-

• [x] Bugfix
• [ ] Feature
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Other (please describe):

How to test this PR

In order to test these changes, just generate types using storyblok generate-typescript-typedefs with the --typeNamesPrefix Prefix flag. You will see that the types are now generated without violating Typescript's type naming convention when using --typeNamesPrefix flag. The issue was the usage of lodash.camelCase.

What is the new behavior?

• Without these changes, the generated output for a component named component_name would be PrefixcomponentNameStoryblok which is clearly violating Typescript's type naming convention.
• With these changes the types are named matching the Typescript type naming convention like PrefixComponentNameStoryblok.

Other information

We are using the --typeNamesPrefix flag to match our typing schema. Therefore, we would be really thankful to get this changes in.