Add r4a-friendly ktlint.jar

This CL adds custom build ktlink.r4a.jar to run presumbit check while
`repo upload`. Previous version wasn't working so developer were using
`repo upload --no-verify`, which results in a lot of inconsistensies
with codestyle as well as absence other checks (style checks, checks for
proper api update, etc). This CL adds proper jar file only, script that
will automate this jar update when new r4a version is released will be
soon.

Note, that in current version ktlint "spacing between operator" rule is
turned off so ktlint won't complain about `padding=50.dp` without spaces.

Important: Please note, that unused import rule is temporary turned off due to
`import com.google.r4a.composer` which looks like unused to ktlint. We
need to patch all such imports with `// ktlint-disable`

Bug: b/126198541
Test: Test by run `repo upload` with incorrectly and correctly formatted file
Change-Id: Ib0e8e05cb83703632af69a3fc4d2a9cbfe43513a
diff --git a/ktlint-android-all.r4a.jar b/ktlint-android-all.r4a.jar
new file mode 100644
index 0000000..ccf889c
--- /dev/null
+++ b/ktlint-android-all.r4a.jar
Binary files differ
diff --git a/ktlint.py b/ktlint.py
index de256cd..bd65b6e 100755
--- a/ktlint.py
+++ b/ktlint.py
@@ -25,7 +25,7 @@
 import sys
 
 MAIN_DIRECTORY = os.path.normpath(os.path.dirname(__file__))
-KTLINT_JAR = os.path.join(MAIN_DIRECTORY, 'ktlint-android-all.jar')
+KTLINT_JAR = os.path.join(MAIN_DIRECTORY, 'ktlint-android-all.r4a.jar')
 FORMAT_MESSAGE = '''
 **********************************************************************
 To format run: