Improved user guide, added CI vale for docs (#2308)

* restructured user guide, minor fixes

* added index file for user guide

* github actions for vale

* testing workflow

* CI vale

* changes as per vale's suggestions

* set CI vale on pull request

* adding homebrew script to macos infra setup file

* fix CI errors

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* testing vale

* vale testing complete

* vale cleanup

* vale test

* vale test for github-pr-check

* vale test for github-pr-check

* vale test for github-pr-check

* vale test for github-pr-check

* testing vale warnings

* testing vale warnings

* testing vale warnings

* testing vale warnings

* testing vale warnings

* testing vale warnings

* testing vale warnings

* swizzled doc cards to add icons

* Align CI params to other CIs

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

.github/styles/docs/Contractions.yml

@@ -0,0 +1,49 @@
+extends: substitution
+message: "Use '%s' instead of '%s'."
+level: suggestion
+ignorecase: true
+action:
+  name: replace
+swap:
+  are not: aren't
+  cannot: can't
+  could not: couldn't
+  did not: didn't
+  do not: don't
+  does not: doesn't
+  has not: hasn't
+  have not: haven't
+  how is: how's
+  is not: isn't
+
+  'it is(?!\.)': it's
+  'it''s(?=\.)': it is
+
+  should not: shouldn't
+
+  'that is(?!\.)': that's
+  'that''s(?=\.)': that is
+
+  'they are(?!\.)': they're
+  'they''re(?=\.)': they are
+
+  was not: wasn't
+
+  'we are(?!\.)': we're
+  'we''re(?=\.)': we are
+
+  'we have(?!\.)': we've
+  'we''ve(?=\.)': we have
+
+  were not: weren't
+
+  'what is(?!\.)': what's
+  'what''s(?=\.)': what is
+
+  'when is(?!\.)': when's
+  'when''s(?=\.)': when is
+
+  'where is(?!\.)': where's
+  'where''s(?=\.)': where is
+
+  will not: won't