perf: improve auto linking performance

[thymikee]

Summary

There are multiple parts of auto linking that are slow, so I made a quick perf pass to reduce the time CLI spends on searching for native files. The biggest gain comes from optimizing findComponentDescriptors to use jsSrcsDir. For a small project with 7 common native dependencies the linking time goes from ~300ms to ~80ms. Perf and gains are bigger with more dependencies, so it's hard to asses the raw %.

before	after

Changes are scoped to smaller commits:

• cdabe1c - remote node_modules and pods from findManifest as we're in android folder
• 79c494f - add android to exclude pattern in findAllPodfilePaths as it's not scoped to sourceDir
• bbc597b - exclude .cxx from findManifest and findPackageClassName
• 503383f - use codegen config to find component descriptors
• d1e8f1a - avoid double invoking of native deps - when calling config, the native dependencies getters are invoked twice: first for the filtering pass, and then for stringily. Changed the filtering logic to push resolved getters of native deps instead of removing non-native dependencies

Test Plan

Make sure the projects are still properly linked

Checklist

• Documentation is up to date.
• Follows commit message convention described in CONTRIBUTING.md.
• For functional changes, my test plan has linked these CLI changes into a local react-native checkout (instructions).