Add missing constituents

[kevee]

Add missing constituents - a handy definition is https://legacy.iho.int/mtg_docs/com_wg/IHOTC/IHOTC_Misc/TWCWG_Constituent_list.pdf

• [x] SIGMA1
• [x] MP1
• [ ] CHI1
• [ ] 2PO1
• [ ] SO1
• [ ] MSN2
• [ ] MNS2
• [ ] OP2
• [ ] MKS2
• [ ] 2NS2
• [ ] MLN2S2
• [ ] 2ML2S2
• [ ] SKM2
• [ ] 2MS2K2
• [ ] MKL2S2
• [ ] M2KS2
• [ ] 2SNMK2
• [ ] 2KMSN2
• [ ] SO3
• [ ] SK3
• [ ] NO3
• [ ] MK4
• [ ] SN4
• [ ] 2MLS4
• [ ] 3MS4
• [ ] ML4
• [ ] N4
• [ ] SL4
• [ ] MNO5
• [ ] 2MO5
• [ ] 2MK5
• [ ] MSK5
• [ ] 3KM5
• [ ] 2MP5
• [ ] 3MP5
• [ ] MNK5
• [ ] 2SM6
• [ ] 2MN6
• [ ] MSN6
• [ ] 2MS6
• [ ] 2NMLS6
• [ ] 2NM6
• [ ] MSL6
• [ ] 2ML6
• [ ] MSK6
• [ ] 2MLNS6
• [ ] 3MLS6
• [ ] 2MK6
• [ ] 2MNO7
• [ ] 2NMK7
• [ ] 2MSO7
• [ ] MSKO7
• [ ] 2MSN8
• [ ] 3MS8
• [ ] 2MS8
• [ ] 2MN8
• [ ] 3MN8
• [ ] 2MSL8
• [ ] 4MLS8
• [ ] 3ML8
• [ ] 3MK8
• [ ] 2MSK8
• [ ] 2M2NK9
• [ ] 3MNK9
• [ ] 4MK9
• [ ] 3MSK9
• [ ] 4MN10
• [ ] M10
• [ ] 3MNS10
• [ ] 4MS10
• [ ] 3MSL10
• [ ] 3M2S10
• [ ] 4MSK11
• [ ] 4MNS12
• [ ] 5MS12
• [ ] 4MSL12
• [ ] 4M2S12
• [ ] TK1
• [ ] RP1
• [ ] KP1
• [x] THETA1. --- double check node corrections
• [ ] KJ2
• [ ] OO2

[kevee]

Letter conversions: A: 1 B: 2 C: 3 D: 4 E: 5 F: 6 G: 7 H: 8 I: 9 J: 10 K: 11 L: 12 M: 13 N: 14 O: 15 P: 16 Q: 17 R: -8 S: -7 T: -6 U: -5 V: -4 W: -3 X: -2 Y: -1 Z: 0