Add some .well-known dir entries

*  Add 1x apple-app-site-association, as it also can appear in docroot: https://developer.apple.com/library/archive/documentation/General/Conceptual/AppSearch/UniversalLinks.html

  *  put .well-known in alphabetical order

  * Added more from IANA registry: https://www.iana.org/assignments/well-known-uris/well-known-uris.xhtml

There might be still more URI -- Apple didn't seem to have registered their URI either at IANA either (process see  https://tools.ietf.org/html/rfc5785#5.1).)

Discovery/Web-Content/common.txt

@@ -24,6 +24,49 @@
 .svn/entries
 .swf
 .web
+.well-known/acme-challenge
+.well-known/apple-app-site-association
+.well-known/ashrae
+.well-known/assetlinks.json
+.well-known/caldav
+.well-known/carddav
+.well-known/coap
+.well-known/core
+.well-known/csvm
+.well-known/dnt
+.well-known/dnt-policy.txt
+.well-known/ecips
+.well-known/enterprise-transport-security
+.well-known/est
+.well-known/genid
+.well-known/hoba
+.well-known/host-meta
+.well-known/http-opportunistic
+.well-known/host-meta.json
+.well-known/idp-proxy
+.well-known/jmap
+.well-known/keybase.txt
+.well-known/looking-glass
+.well-known/matrix
+.well-known/mta-sts.txt
+.well-known/mud
+.well-known/nfv-oauth-server-configuration
+.well-known/ni
+.well-known/oauth-authorization-server
+.well-known/openid-configuration
+.well-known/openorg
+.well-known/pki-validation
+.well-known/posh
+.well-known/reload-config
+.well-known/repute-template
+.well-known/resourcesync
+.well-known/stun-key
+.well-known/thread
+.well-known/time
+.well-known/timezone
+.well-known/uma2-configuration
+.well-known/void
+.well-known/webfinger
 0
 00
 01
@@ -585,6 +628,7 @@ appeals
 append
 appl
 apple
+apple-app-site-association
 applet
 applets
 appliance
@@ -3455,7 +3499,6 @@ robot
 robotics
 robots
 robots.txt
-.well-known/apple-app-site-association
 role
 roles
 roller