Add choco_install rule (#998)

* Add choco_install rule

Adds a rule to append '.install' to a chocolatey install command that
failed because of a non-existent package.

TODO: add support for other suffixes (.portable), find more parameter
cases

* Apply suggestions from code review

Circling back to retest

Co-Authored-By: Pablo Aguiar <scorphus@gmail.com>

* Fixed errors from suggested changes

* Added more test cases, refactored parsing

* Reformat keyword detection if statement

* Fixed flake errors

* Added tests for match

thefuck/rules/choco_install.py

@@ -0,0 +1,25 @@
+from thefuck.utils import for_app, which
+
+
+@for_app("choco", "cinst")
+def match(command):
+    return ((command.script.startswith('choco install') or 'cinst' in command.script_parts)
+            and 'Installing the following packages' in command.output)
+
+
+def get_new_command(command):
+    # Find the argument that is the package name
+    for script_part in command.script_parts:
+        if (
+            script_part not in ["choco", "cinst", "install"]
+            # Need exact match (bc chocolatey is a package)
+            and not script_part.startswith('-')
+            # Leading hyphens are parameters; some packages contain them though
+            and '=' not in script_part and '/' not in script_part
+            # These are certainly parameters
+        ):
+            return command.script.replace(script_part, script_part + ".install")
+    return []
+
+
+enabled_by_default = bool(which("choco")) or bool(which("cinst"))