Support pannerAttr for Howler sounds (#1788) #1486

Job	Run time
android	26m 8s
docs	52s
air-samples (4.0.5)	3m 4s
flash-samples	36s
air-samples (4.1.5)	3m 6s
ios	17m 11s
air-samples (4.2.5)	3m 14s
linux	15m 50s
air-samples (4.3.6)	3m 2s
macos	16m 6s
windows	15m 21s
package-haxelib	1m 42s
hashlink-samples (windows-latest)	58s
html5-samples (3.4.7)	20s
hashlink-samples (ubuntu-20.04)	17s
hashlinkc-samples (windows-latest)	2m 13s
html5-samples (4.0.5)	54s
hashlink-samples (macos-13)	48s
hashlinkc-samples (ubuntu-20.04)	1m 42s
html5-samples (4.1.5)	55s
neko-samples (3.4.7, windows-latest)	1m 1s
hashlinkc-samples (macos-13)	2m 28s
html5-samples (4.2.5)	54s
neko-samples (3.4.7, ubuntu-20.04)	45s
html5-samples (4.3.6)	1m 3s
neko-samples (3.4.7, macos-13)	41s
neko-samples (4.2.5, windows-latest)	50s
neko-samples (4.2.5, ubuntu-20.04)	19s
neko-samples (4.2.5, macos-13)	45s
notify	2s
	2h 3m 7s

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