fix: move types to src dir to escape src / dist dirs in paths

[dangreen]

Files were moved:

types/tests -> test/types
types -> src/types

On build, types from src/types will be copied to dist/types

package.json:

"emitDeclarations": "tsc --emitDeclarationOnly && cp -R ./src/types/ ./dist/types/"

Fixes #10991

[kurkle]

How is the issue fixed? By moving the types such that the relative paths match in dist/src?

[kurkle]

nit: After this, type changes are detected as src and thus full build/coverrage will be executed in CI.

[dangreen]

@kurkle types/index.d.ts had references to the src directory that was not packaged into the package. The paths are now relative to the src directory and work correctly in src and in dist directories as well