cli: add a test of `hg debugnodemap --manifest` this is a new option that's not tested yet

cli: fix spelling in `debugnodemap` error messages

cli: make debugnodemap capable of inspecting an arbitrary nodemap This lets us inspect the manifest nodemap and individual directory nodemaps when treemanifest is used.

rust: mostly avoid streaming zstd decompression Streaming ZStd decompression seems slightly slower, and the API we use makes it very inconvenient to re-use the decompression context. Instead of using that, use the buffer-backed version, because we can give a reasonable-ish size estimate.

rust: in zstd decompression, avoid a useless vec initialization

rust: speed up zstd decompression by re-using the decompression context Admittedly, zstd is already pretty fast, but this change makes it a bit faster yet: it saves ~5% of time it takes to read our large repo. The actual motivating use case is treemanifest: in treemanifest we end up reading *lots* of small directories, and many of them need decompression, and there the saving for [rhg files] is >10%. (which also seems unreasonable, we should probably keep things uncompressed more)

store: rename `topfiles` to `top_entries` The method is now returning StoreEntries let us rename the method for clarity.

store: rename `datafiles` to `data_entries` The method is now returning StoreEntries let us rename the method for clarity.

store: use boolean property for upgrade's matchrevlog

store: use the new boolean property in `upgrade`

store: use the new boolean property in `remotefilelogserver`

store: use the boolean property in `repair_issue6528`

store: use the new boolean property in `narrow`

store: use the boolean property in `store`

store: introduce boolean property for revlog type This will avoid exposing implementation details to more generic code.

store: issue a single entry for each revlog We now yield a single entry, with data about each files involved. This help to simplify multiple code using this and it will help to further simplify and fixes the streaming code.

store: rename `unencoded_path` to `entry_path` for StoreEntry This remove the ambiguity with StoreFile and make sure use code will be using the right API.

store: do the revlog matching on entry directly This is the last blocker to safely merge the revlog files in a single entry.

store: split the wrapping of encodedstore between _wrap and datafiles The `datafiles` method of `basicstore` is doing a lot of work that should be done on decoded filename. So we now wrap `_walk` to do the decoding, and less work in `datafiles`. This is necessary to make sure file from the same revlog can be grouped together.

store: introduce a main_file_path method for revlog This help code that need to point revlog to an index file. This is put to use in the upgrade code.

upgrade: actually use StoreEntry API to create revlog Lets make use of the semanctic of the object we are passed.

upgrade: use StoreEntry object in upgrade We will make more use of the API in the next changeset, but just moving to use entry is a significant change for the engine codebase.

upgrade: drop a quick fix that is not longer necessary We won't issue bad revlog from topfile anymore.

store: use StoreEntry API instead of parsing filename in largefile This is more explicit and more robust.

store: use StoreEntry API instead of parsing filename when listing manifestlog This is more explicit and more robust.

store: use StoreEntry API instead of parsing filename when fixing issue6528 This is more explicit and more robust. We also introduce a small output change as it make things simpler and this is a affecting a debug-command.

store: use StoreEntry API instead of parsing filename in remotefilelog This is more explicit and more robust.

store: use StoreEntry API instead of parsing filename in narrow This is more explicit and more robust.

store: add a `target_id` attribute on RevlogStoreEntry This hold the "target" (file, directory, etc) of a revlog. Having this available will help a lot of code to avoid direct file path access.

store: actually tag tree manifest revlogs as manifest revlogs It turn out we have been mislabeling these for a long while. This is now fixed.