fix(template): Add missing configutation for nitro-modules

[serjooo]

Summary

While creating a nitro-module using npx create-react-native-library@latest and debugging issues I ran to, I noticed there are missing configurations in the podspec.

Mainly the following was missing when building a nitro-module:

  s.source_files = [
    # Implementation (Swift)
    "ios/**/*.{swift}",
    # Autolinking/Registration (Objective-C++)
    "ios/**/*.{m,mm}",
    # Implementation (C++ objects)
    "cpp/**/*.{hpp,cpp}",
  ]

  s.pod_target_xcconfig = {
    # C++ compiler flags, mainly for folly.
    "GCC_PREPROCESSOR_DEFINITIONS" => "$(inherited) FOLLY_NO_CONFIG FOLLY_CFG_NO_COROUTINES"
  }

  s.dependency 'React-jsi'
  s.dependency 'React-callinvoker'

This fixes the compilation errors around not finding Folly, or the module not compiling.

Test plan

I tested this locally by running the tool and having the correct generated file.