Implement graphite render api

[AndreevDm]

Convert graphite functions to ClickHouse queries. Only JSON format for now.

[AndreevDm]

Functions priority

alias:		23589812
cactiStyle:		14834058
color:		3879735
scale:		3455421
sumSeries:		2866277
derivative:		2106947
maxSeries:		1899711
keepLastValue:		1736779
constantLine:		1636569
timeShift:		1506832
transformNull:		1461800
movingAverage:		1434426
group:		1371640
averageSeries:		1295397
lineWidth:		1035880
removeAboveValue:		999727
aliasByNode:		660223
removeBelowValue:		639287
sum:		580578
log:		487863
divideSeries:		471061
diffSeries:		444030
secondYAxis:		394796
legendValue:		299650
asPercent:		245006
minSeries:		134945
alpha:		124310
nonNegativeDerivative:		112439
avg:		101780
summarize:		90486
sortByTotal:		82620
limit:		80003
exclude:		66311
movingMedian:		66093
perSecond:		61074
offset:		51966
groupByNode:		35974
movingMaximum:		34319
highestAverage:		23496
aliasSub:		20639
sortByName:		17902
stacked:		1136
averageAbove:		1034
dashed:		383
aliasByMetric:		347
3warns2Crit:		33
highestMax:		12
highestCurrent:		2
delta:		1
minAbove:		1
maxAbove:		1
consolidateBy:		1