Add missing `Hint Mode` for `ghost_var` and `gset_bij`; fix arguments of `gset_bijG`

See merge request iris/iris!601

Also put the arguments of `gset_bijG` in the right order.

mono_nat_update: make first argument implicit

See merge request iris/iris!600

Implement monotone partial bijections as a view

See merge request iris/iris!543

This is an alternative to !91, which was written prior to views. Using
the view CMRA we factor the implementation into purely algebraic library
and a logic-level wrapper. The logic-level wrapper exports resources
which seal away the underlying ownership and has theorems which handle
the ownership reasoning.

Rename `mnat`/`mnat_auth` into `mono_nat`.

See merge request iris/iris!572

Remove the weaker version with the `_lb` since the stronger version is just
as easy to use in the proofmode.

- This avoids confusion between `mnat` and `max_nat`. The `m` stands for `mono`.
- With `_mono` added, the `_auth` suffix in the algebra name no longer makes
  sense, so I removed it.
- This makes the names between the logic and the algebra-level library consistent.
- I also renamed `_frag` into `_lb` in the algebra-level library so as to make it
  consistent with the logic-level library.

Furthermore make the order of lemmas consistent and make the versions for the
fractions consistent.

Remove `CopyDestruct` heuristic

See merge request iris/iris!596

add gmap_view_alloc_big

See merge request iris/iris!598

This is an alternative to !591.

wp_finish: avoid making a goal unprovable

See merge request iris/iris!593

Make the IPM documentation more useful

See merge request !589

- Separated out the simpler invocations of tactics from their full
  forms. In the process we now document what parts of a tactic are
  optional.
- Convey what the common and rare tactics are, for example that the
  argument to `iModIntro` is rarely needed.
- Use "destruct" to talk about invoking an intro pattern, rather than
  eliminate, to stay closer to Coq terminology and avoid this potentially
  confusing PL term.
- Added an overview of the "grammar entries" relevant to many tactics
  (ipat, selpat, spat, and pm_trm). Added links to those sections
  everywhere.

Add explicit Local/Global to hints at top level

See merge request iris/iris!594