[vale] Add some vale styles and an ini file

vale/.vale-styles/Microsoft/AMPM.yml

@@ -0,0 +1,9 @@
+extends: existence
+message: Use 'AM' or 'PM' (preceded by a space).
+link: https://docs.microsoft.com/en-us/style-guide/a-z-word-list-term-collections/term-collections/date-time-terms
+level: error
+nonword: true
+tokens:
+  - '\d{1,2}[AP]M'
+  - '\d{1,2} ?[ap]m'
+  - '\d{1,2} ?[aApP]\.[mM]\.'