patch 9.1.1271: filetype: Power Query files are not recognized

Problem:  filetype: Power Query files are not recognized
Solution: detect '*.pq' as pq filetype, include pq syntax and filetype
          plugin (Anarion Dunedain)

Microsoft Power Query provides a powerful data import experience that
encompasses many features. Power Query works with desktop Analysis
Services, Excel, and Power BI workbooks, in addition to many online
services, such as Fabric, Power BI service, Power Apps, Microsoft 365
Customer Insights, and more. A core capability of Power Query is to
filter and combine, that is, to mash-up data from one or more of a rich
collection of supported data sources. Any such data mashup is expressed
using the Power Query M formula language. The M language is a
functional, case sensitive language similar to F#.

Reference:
- Power Query M formula language overview:
  https://learn.microsoft.com/en-us/powerquery-m/

closes: #17045

Signed-off-by: Anarion Dunedain <anarion80@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/filetype.vim

@@ -1967,6 +1967,9 @@ au BufNewFile,BufRead	*.ps1,*.psd1,*.psm1,*.pssc	setf ps1
 au BufNewFile,BufRead	*.ps1xml			setf ps1xml
 au BufNewFile,BufRead	*.cdxml,*.psc1			setf xml
 
+" Power Query M
+au BufNewFile,BufRead *.pq			setf pq
+
 " Printcap and Termcap
 au BufNewFile,BufRead *printcap
 	\ let b:ptcap_type = "print" | setf ptcap