add flag to prioritize glob of files when searching for types

[bywo]

--files 'src/resources/**' argument will search those files first for the given type.

Shaves off less than a second in my usage, but it's still an improvement:

~/d/api ❯❯❯ time node ../ts-json-schema-generator/bin/ts-json-schema-generator --path ./tsconfig.json --type 'UserConvertTypePayload' --skip-type-check
10.38s user 0.65s system 166% cpu 6.609 total
~/d/api ❯❯❯ time node ../ts-json-schema-generator/bin/ts-json-schema-generator --path ./tsconfig.json --type 'UserConvertTypePayload' --skip-type-check --files 'src/resources/**'
9.65s user 0.62s system 168% cpu 6.085 total

resolves #59

[domoritz]

Just wondering, if we just prioritize files that are not in node_modules, do we get the same benefit (but we avoid having to add a new command line option)? Let's try this before merging. Thanks!

[bywo]

Yea I think we'd get a benefit, but it wouldn't allow you to be as specific about which files to target first. For example, if you knew exactly which file the type lived in, you'd see a bigger benefit than if you just deprioritized node_modules.

I could also change the default algorithm to deprioritize node_modules so everyone gets the benefit.

[domoritz]

I could also change the default algorithm to deprioritize node_modules so everyone gets the benefit.

Let's try that first in a separate PR and measure the impact. I have a hunch that scanning node_modules takes a majority of the time.

Thanks for helping with this and bearing with my obsession to measure and get data before we make a decision.

[bywo]

check this out: #61

[domoritz]

Let's re-evaluate after #61 is merged.

[domoritz]

I'm closing this for now but happy to review another PR.