Sprites: SKAG projectiles (#1477)

I made these better sprites for the SKAG projectile. The ball is made from scratch, and the impact is modified from the current one.

Co-authored-by: Xindage <xindage@gmail.com>

buildcfg.txt

@@ -2425,29 +2425,29 @@ POB2A0
 
 #endif
 
-BAL2A0	8	12
-BAL2B0	8	13
-BAL2C0	16	23
-BAL2D0	20	27
-BAL2E0	25	34
-BFS1A0	30	36
-BFS1B0	29	33
+BAL2A0	8	8
+BAL2B0	8	8
+BAL2C0	16	16
+BAL2D0	20	19
+BAL2E0	25	24
+BFS1A0	27	31
+BFS1B0	27	31
 BFUGA0	28	20
 BFGGA0	-95	-106
 BFGGB0	-95	-106
 BFGGC0	-88	-101
 BFGFA0	-88	-83
 BFGFB0	-88	-82
-BFE1A0  69	48
-BFE1B0  69	48
-BFE1C0  70	68
-BFE1D0  69	65
-BFE1E0  12	15
-BFE1F0  4	9
-BFE2A0  36	36
-BFE2B0  34	35
-BFE2C0  12	16
-BFE2D0  4	10
+BFE1A0  62      37
+BFE1B0  66      49
+BFE1C0  68      60
+BFE1D0  65      59
+BFE1E0  61      59
+BFE1F0  62       57
+BFE2A0  33      28
+BFE2B0  34      33
+BFE2C0  32      32
+BFE2D0  31       31
 BSKUA0	6	17
 BSKUB0	6	17
 CELLA0	8	12