Adopt consolidated logging mechanism (#4370)

* Adopted the new MXLog and replaced NSLog throughout the application - vector-im/element-ios/issues/4351
* Replaced NSLog() and print() usages with MXLog.debug()
* Added swiftlint rules for NSLog(), print(), println() and os_log()
* Escape paths used to run script build phases for swiftlint and swiftgen

.swiftlint.yml

@@ -63,3 +63,31 @@ type_name:
   max_length: # warning and error
     warning: 150
     error: 1000
+
+custom_rules:
+  ns_log_deprecation:
+    regex: "\\b(NSLog)\\b"
+    match_kinds: identifier
+    message: "MXLog should be used instead of NSLog()"
+    severity: error
+
+  print_deprecation:
+    regex: "\\b(print)\\b"
+    match_kinds: identifier
+    message: "MXLog should be used instead of print()"
+    severity: error
+
+  print_ln_deprecation:
+    regex: "\\b(println)\\b"
+    match_kinds: identifier
+    message: "MXLog should be used instead of println()"
+    severity: error
+
+  os_log_deprecation:
+    regex: "\\b(os_log)\\b"
+    match_kinds: identifier
+    message: "MXLog should be used instead of os_log()"
+    severity: error
+
+
+