Add lexer test runner and whitespace characters tests

Whitespace characters for the tests are U+000B, U+000C, U+000D, U+0085, U+2028, U+2029

compiler/testData/lexer/kotlin/whitespaceCharacters/nextLine/nextLine.kt

@@ -0,0 +1,4 @@
+val x = 1
+…
+
+val y = 2

compiler/testData/lexer/kotlin/whitespaceCharacters/nextLine/nextLine.txt

@@ -0,0 +1,17 @@
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('x')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+INTEGER_LITERAL ('1')
+WHITE_SPACE ('\n')
+BAD_CHARACTER ('…')
+WHITE_SPACE ('\n\n')
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('y')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+INTEGER_LITERAL ('2')

compiler/testData/lexer/kotlin/whitespaceCharacters/nextLine/nextLineInComments.kt

@@ -0,0 +1,12 @@
+// some…comment
+//…some comment
+
+/*…*/
+/* some…comment */
+/*…some comment */
+/* some comment…*/
+
+/***/
+/** some…doc */
+/**…some doc */
+/** some doc…*/

compiler/testData/lexer/kotlin/whitespaceCharacters/nextLine/nextLineInComments.txt

@@ -0,0 +1,19 @@
+EOL_COMMENT ('// some…comment')
+WHITE_SPACE ('\n')
+EOL_COMMENT ('//…some comment')
+WHITE_SPACE ('\n\n')
+BLOCK_COMMENT ('/*…*/')
+WHITE_SPACE ('\n')
+BLOCK_COMMENT ('/* some…comment */')
+WHITE_SPACE ('\n')
+BLOCK_COMMENT ('/*…some comment */')
+WHITE_SPACE ('\n')
+BLOCK_COMMENT ('/* some comment…*/')
+WHITE_SPACE ('\n\n')
+KDoc ('/***/')
+WHITE_SPACE ('\n')
+KDoc ('/** some…doc */')
+WHITE_SPACE ('\n')
+KDoc ('/**…some doc */')
+WHITE_SPACE ('\n')
+KDoc ('/** some doc…*/')

compiler/testData/lexer/kotlin/whitespaceCharacters/nextLine/nextLineInStringLiterals.kt

@@ -0,0 +1,20 @@
+val x1 = ". … ."
+
+val x2 = ".   .…"
+
+val x3 = "….   ."
+
+val x4 = '…'
+
+val x5 = """. … ."""
+
+val x6 = """.   .…"""
+
+val x7 = """….   ."""
+
+val x8 = """.
+…."""
+
+val x9 = """.
+…
+."""

compiler/testData/lexer/kotlin/whitespaceCharacters/nextLine/nextLineInStringLiterals.txt

@@ -0,0 +1,93 @@
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('x1')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+OPEN_QUOTE ('"')
+REGULAR_STRING_PART ('. … .')
+CLOSING_QUOTE ('"')
+WHITE_SPACE ('\n\n')
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('x2')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+OPEN_QUOTE ('"')
+REGULAR_STRING_PART ('.   .…')
+CLOSING_QUOTE ('"')
+WHITE_SPACE ('\n\n')
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('x3')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+OPEN_QUOTE ('"')
+REGULAR_STRING_PART ('….   .')
+CLOSING_QUOTE ('"')
+WHITE_SPACE ('\n\n')
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('x4')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+CHARACTER_LITERAL (''…'')
+WHITE_SPACE ('\n\n')
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('x5')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+OPEN_QUOTE ('"""')
+REGULAR_STRING_PART ('. … .')
+CLOSING_QUOTE ('"""')
+WHITE_SPACE ('\n\n')
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('x6')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+OPEN_QUOTE ('"""')
+REGULAR_STRING_PART ('.   .…')
+CLOSING_QUOTE ('"""')
+WHITE_SPACE ('\n\n')
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('x7')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+OPEN_QUOTE ('"""')
+REGULAR_STRING_PART ('….   .')
+CLOSING_QUOTE ('"""')
+WHITE_SPACE ('\n\n')
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('x8')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+OPEN_QUOTE ('"""')
+REGULAR_STRING_PART ('.')
+REGULAR_STRING_PART ('\n')
+REGULAR_STRING_PART ('….')
+CLOSING_QUOTE ('"""')
+WHITE_SPACE ('\n\n')
+val ('val')
+WHITE_SPACE (' ')
+IDENTIFIER ('x9')
+WHITE_SPACE (' ')
+EQ ('=')
+WHITE_SPACE (' ')
+OPEN_QUOTE ('"""')
+REGULAR_STRING_PART ('.')
+REGULAR_STRING_PART ('\n')
+REGULAR_STRING_PART ('…')
+REGULAR_STRING_PART ('\n')
+REGULAR_STRING_PART ('.')
+CLOSING_QUOTE ('"""')