lib: move table_names to separate dir

lib/table_names/jmdict.dart

@@ -0,0 +1,42 @@
+abstract class JMdictTableNames {
+  static const String entry = 'JMdict_Entry';
+  static const String kanjiElement = 'JMdict_KanjiElement';
+  static const String kanjiInfo = 'JMdict_KanjiElementInfo';
+  static const String readingElement = 'JMdict_ReadingElement';
+  static const String readingInfo = 'JMdict_ReadingElementInfo';
+  static const String readingRestriction = 'JMdict_ReadingElementRestriction';
+  static const String sense = 'JMdict_Sense';
+  static const String senseAntonyms = 'JMdict_SenseAntonym';
+  static const String senseDialect = 'JMdict_SenseDialect';
+  static const String senseField = 'JMdict_SenseField';
+  static const String senseGlossary = 'JMdict_SenseGlossary';
+  static const String senseInfo = 'JMdict_SenseInfo';
+  static const String senseMisc = 'JMdict_SenseMisc';
+  static const String sensePOS = 'JMdict_SensePOS';
+  static const String senseLanguageSource = 'JMdict_SenseLanguageSource';
+  static const String senseRestrictedToKanji = 'JMdict_SenseRestrictedToKanji';
+  static const String senseRestrictedToReading =
+      'JMdict_SenseRestrictedToReading';
+  static const String senseSeeAlso = 'JMdict_SenseSeeAlso';
+
+  static Set<String> get allTables => {
+        entry,
+        kanjiElement,
+        kanjiInfo,
+        readingElement,
+        readingInfo,
+        readingRestriction,
+        sense,
+        senseAntonyms,
+        senseDialect,
+        senseField,
+        senseGlossary,
+        senseInfo,
+        senseMisc,
+        sensePOS,
+        senseLanguageSource,
+        senseRestrictedToKanji,
+        senseRestrictedToReading,
+        senseSeeAlso
+      };
+}

lib/table_names/kanjidic.dart

@@ -0,0 +1,35 @@
+abstract class KANJIDICTableNames {
+  static const String character = 'KANJIDIC_Character';
+  static const String radicalName = 'KANJIDIC_RadicalName';
+  static const String codepoint = 'KANJIDIC_Codepoint';
+  static const String radical = 'KANJIDIC_Radical';
+  static const String strokeMiscount = 'KANJIDIC_StrokeMiscount';
+  static const String variant = 'KANJIDIC_Variant';
+  static const String dictionaryReference =
+      '_KANJIDIC_DictionaryReference_Part1';
+  static const String dictionaryReferenceMoro =
+      '_KANJIDIC_DictionaryReference_Moro';
+  static const String queryCode = 'KANJIDIC_QueryCode';
+  static const String reading = 'KANJIDIC_Reading';
+  static const String kunyomi = 'KANJIDIC_Kunyomi';
+  static const String onyomi = 'KANJIDIC_Onyomi';
+  static const String meaning = 'KANJIDIC_Meaning';
+  static const String nanori = 'KANJIDIC_Nanori';
+
+  static Set<String> get allTables => {
+        character,
+        radicalName,
+        codepoint,
+        radical,
+        strokeMiscount,
+        variant,
+        dictionaryReference,
+        dictionaryReferenceMoro,
+        queryCode,
+        reading,
+        kunyomi,
+        onyomi,
+        meaning,
+        nanori
+      };
+}

lib/table_names/radkfile.dart

@@ -0,0 +1,7 @@
+abstract class RADKFILETableNames {
+  static const String radkfile = 'RADKFILE';
+
+  static Set<String> get allTables => {
+        radkfile,
+      };
+}

lib/table_names/tanos_jlpt.dart

@@ -0,0 +1,5 @@
+abstract class TanosJLPTTableNames {
+  static const String jlptTag = 'JMdict_JLPTTag';
+
+  static Set<String> get allTables => {jlptTag};
+}