Added lexars

lexers/testdata/properties.actual

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+# You are reading a comment in ".properties" file.
+! The exclamation mark can also be used for comments.
+# Lines with "properties" contain a key and a value separated by a delimiting character.
+# There are 3 delimiting characters: '=' (equal), ':' (colon) and whitespace (space, \t and \f).
+website = https://en.wikipedia.org/
+language : English
+# White space that appears between the key, the value and the delimiter is ignored.
+# This means that the following are equivalent (other than for readability).
+hello=hello
+hello = hello
+topic .properties files
+# A word on a line will just create a key with no value.
+empty
+# Keys with the same name will be overwritten by the key that is the furthest in a file.
+# For example the final value for "duplicateKey" will be "second".
+duplicateKey = first
+duplicateKey = second
+# Adding a \ at the end of a line means that the value continues to the next line.
+towLines = This line \
+           continues
+threeLines: This value \
+            has even \
+            three lines
+# If you need to add newlines and carriage returns, they need to be escaped using \n and \r respectively.
+# You can also optionally escape tabs with \t for readability purposes.
+valueWithEscapes = This is a newline\n and a carriage return\r and a tab\t.
+# You can also use Unicode escape characters (maximum of four hexadecimal digits).
+# In the following example, the value for "encodedHelloInJapanese" is "こんにちは".
+encodedHelloInJapanese = \u3053\u3093\u306b\u3061\u306f
+# But with more modern file encodings like UTF-8, you can directly use supported characters.
+helloInJapanese = こんにちは
+  # Comments and keys can have leading whitespace
+  foo = I have leading whitespace
+# Comments and keys can have trailing whitespace as part of the comment   
+bar = I have trailing whitespace as part of the value