Update to ChEBI 2.0 & SDF data (#147)

* remove outdated JCI files

* get molecule data from SDF file

* add new tokens

* add chembl dependency

* update tests for SDF files

* fix 3-STAR preprocessing

* Revert "fix 3-STAR preprocessing"

This reverts commit 9166d9e.

* add new tokens from SDF

* fix 3-star processing

* add sanitize function

Author: sfluegel05

chebai/preprocessing/bin/smiles_token/tokens.txt

@@ -4375,3 +4375,148 @@ b
 [OH2]
 [TlH2+]
 [SbH6+3]
+[1*]
+[2*]
+[3*]
+[4*]
+[5*]
+[6*]
+[7*]
+[8*]
+[9*]
+[3He+]
+[12C+4]
+[16O+6]
+[11B-3]
+[11B+3]
+[31P+3]
+[31P+5]
+[34S+2]
+[34S+4]
+[34S+6]
+[55Mn+2]
+[55Mn+4]
+[55Mn+7]
+[57Fe+3]
+[59Co+2]
+[75As-3]
+[98Mo+3]
+[98Mo+6]
+[Cl:1]
+[c:2]
+[n:3]
+[c:4]
+[c:5]
+[H:24]
+[c:6]
+[H:25]
+[c:7]
+[H:26]
+[c:8]
+[H:27]
+[c:9]
+[c:10]
+[H:28]
+[c:11]
+[C:12]
+[O:13]
+[c:14]
+[c:15]
+[H:31]
+[c:16]
+[H:32]
+[c:17]
+[H:33]
+[c:18]
+[c:19]
+[H:34]
+[c:20]
+[H:35]
+[c:21]
+[H:36]
+[n:22]
+[c:23]
+[H:29]
+[H:30]
+[C:1]
+[C:2]
+[O:3]
+[O:4]
+[H:41]
+[H:42]
+[H:43]
+[H:44]
+[C:11]
+[O:12]
+[C:14]
+[C:15]
+[O:16]
+[N:17]
+[C:18]
+[C:19]
+[H:50]
+[C:20]
+[H:51]
+[H:52]
+[N:21]
+[c:25]
+[c:26]
+[H:53]
+[c:27]
+[F:37]
+[c:28]
+[N:31]
+[C:32]
+[H:56]
+[H:57]
+[C:33]
+[H:58]
+[H:59]
+[O:34]
+[C:35]
+[H:60]
+[H:61]
+[C:36]
+[H:62]
+[H:63]
+[c:29]
+[H:54]
+[c:30]
+[H:55]
+[C:22]
+[O:23]
+[O:24]
+[H:48]
+[H:49]
+[H:47]
+[H:45]
+[H:46]
+[H:38]
+[H:39]
+[H:40]
+[NaH2-]
+[KH2-]
+[C-2]
+[As+2]
+[P+2]
+[LiH2-]
+[BH2-3]
+[O+2]
+[BeH2-]
+[W@]
+[W@@]
+[RbH2-]
+[FrH2-]
+[AlH-2]
+[CsH2-]
+[B-2]
+[V@]
+[V@@]
+[V@OH]
+[*:0]
+[1*:0]
+[2*:0]
+[3*:0]
+[224RaH2]
+[226RaH2]
+[228RaH2]