Add shortcuts for decimal rating (#3226)

* Add shortcuts for decimal rating
* Add shortcut to reset decimal rating
* Generalise rating keybind code

Use r x x for decimal ratings.
* Update manual page
---------

Co-authored-by: WithoutPants <53250216+WithoutPants@users.noreply.github.com>

ui/v2.5/src/docs/en/Changelog/v0190.md

@@ -10,6 +10,7 @@
 * Added Anonymise task to generate an anonymised version of the database. ([#3186](https://github.com/stashapp/stash/pull/3186))
 
 ### 🎨 Improvements
+* Added `r x x` keyboard shortcuts to set decimal ratings. ([#3226](https://github.com/stashapp/stash/pull/3226))
 * Changed performer aliases to be a list, rather than a string field. ([#3113](https://github.com/stashapp/stash/pull/3113))
 
 ### 🐛 Bug fixes

ui/v2.5/src/docs/en/Manual/KeyboardShortcuts.md

@@ -84,8 +84,10 @@
 
 | Keyboard sequence | Action |
 |-------------------|--------|
-| `r {1-5}` | Set rating |
-| `r 0` | Unset rating |
+| `r {1-5}` | Set rating (stars) |
+| `r 0` | Unset rating (stars) |
+| `r {0-9} {0-9}` | Set rating (decimal - `00` for `10.0`) |
+| ``r ` `` | Unset rating (decimal) |
 | `s s` | Save Scene |
 | `d d` | Delete Scene |
 | `Ctrl + v` | Paste Scene cover |
@@ -110,8 +112,10 @@
 | `e` | Edit Movie |
 | `s s` | Save Movie |
 | `d d` | Delete Movie |
-| `r {1-5}` | Set rating (in edit mode) |
-| `r 0` | Unset rating (in edit mode) |
+| `r {1-5}` | [Edit mode] Set rating (stars) |
+| `r 0` | [Edit mode] Unset rating (stars) |
+| `r {0-9} {0-9}` | [Edit mode] Set rating (decimal - `r 0 0` for `10.0`) |
+| ``r ` `` | [Edit mode] Unset rating (decimal) |
 | `Ctrl + v` | Paste Movie image |
 
 [//]: # "Commented until implementation is dealt with"