Add missing tokenizers

[pquentin]

And also:

• Sort tokenizers alphabetically
• Move NoriTokenizer to its own file like other plugins

I can split this in multiple commits if that would help review.

[l-trotta]

Where did you find PathHierarchyPascalCaseTokenizer? asking because I didn't find it in the server code or the documentation so I'm wondering if I'm missing some references. Also taking a look at the server code and discovering how many tokenizers/analyzers/normalizers we're missing... :')

[pquentin]

Where did you find PathHierarchyPascalCaseTokenizer?

There are currently two ways to use a Path hierarchy tokenizer: with path_hierarchy (snake_case, the default) and PathHierarchy (PascalCase, presumably for legacy reasons). OK, definitely for legacy reasons: elastic/elasticsearch#15785. (Looks like Elasticsearch developers call it camelCase instead, but the idea is the same.)

When I initially added the PascalCase version I was simply fixing tests and did not stop to understand why we had such a test. But now I'll make sure to skip that test in the flights recorder.

[l-trotta]

LGTM!