This reverts commit 4a3dbb6c.

This reverts commit 7cb8ac43.

* introduce IRelativePattern and use in extension API

* 💄

* docs

* introduce RelativePattern

* support RelativePattern also for file watcher

* also make findFiles support RelativePattern

* less type conversion

* add GlobPattern type and remove readonly

* make base a string

* fix setter access to RelativePattern

* fix npe when exclude is undefined

* fix findFiles: pattern seems to be matched against workspace always

* 💄

* clarify glob pattern matching

* Don't sort scores in test

This test was a noop, because sort sorted `scores` as well. After this change,
the test fails. It passes after the following changes:

* hw should be a higher score than just H, since the w appears after a word
  separator.
* Same with ld and L.
* Change target so that L comes before l. The scorer algorithm is greedy, so
  will not match the upper case L otherwise, which is the point of that specific
  case.

* Use correct index for same case bonus

`indexOf` is the index into `target`, while `index` is the correct index into
`query`.

* Return early for query length larger than target