Add some handicaps

Two Lance SFEN: 1nsgkgsn1/1r5b1/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1
3-Piece SFEN: 1nsgkgsnl/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1
5-Piece SFEN: 2sgkgsn1/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1
7-Piece SFEN: 3gkgs2/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1
9-Piece SFEN: 4kg3/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1
Taiko SFEN: lnsgkgsnl/1r5b1/p1ppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1 (Uwate has more advantage)
Two Lance Gain SFEN: 1nsgkgsn1/1r5b1/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w 2L 1
3-Piece Gain SFEN: 1nsgkgsnl/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w RBL 1
5-Piece Gain SFEN: 2sgkgsn1/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w RBN2L 1
7-Piece Gain SFEN: 3gkgs2/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w RBS2N2L 1
9-Piece Gain SFEN: 4kg3/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w RBG2S2N2L 1
@Wanderer and more developers

Opened an issue: github.com/WandererXII/lishogi/issues/990

Reply @Wanderer and @Tracy-Reznik :
Two Lance (兩香落ち) SFEN: 1nsgkgsn1/1r5b1/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1
3-Piece (三枚落ち) SFEN: 1nsgkgsnl/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1
5-Piece (五枚落ち) SFEN: 2sgkgsn1/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1
7-Piece (七枚落ち) SFEN: 3gkgs2/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1
9-Piece (九枚落ち) SFEN: 4kg3/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1
Taiko (太閤落ち) SFEN: lnsgkgsnl/1r5b1/p1ppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w - 1 (Uwate has more advantage)
Two Lance Gain (兩香得) SFEN: 1nsgkgsn1/1r5b1/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w 2L 1
3-Piece Gain (三枚得) SFEN: 1nsgkgsnl/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w RBL 1
5-Piece Gain (五枚得) SFEN: 2sgkgsn1/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w RBN2L 1
7-Piece Gain (七枚得) SFEN: 3gkgs2/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w RBS2N2L 1
9-Piece Gain (九枚得) SFEN: 4kg3/9/ppppppppp/9/9/9/PPPPPPPPP/1B5R1/LNSGKGSNL w RBG2S2N2L 1