#29: Streamline the Ultet processing

[benedeki]

The process is now:

• initialization
• source code analysis and creating the db app model
• target database(s) analysis, and update of the DbAppModel with it.
• DbItems (diffs) generation for each database and grouping them per transaction
• SQLs generation from DbItems
• execution/print of the SQLs

Other chances:

• Using Balta for queries now
• Multiple databases (in source only) support
• Finished and refactored table diffing

Depends on #13

Partially solved for #8

Closes #29
Closes #12
Closes #6

[github-actions]

JaCoCo code coverage report - scala 2.12.18

File	Coverage [20.38%]	❌
DBTableFromYaml.scala	100%	🍏
PgTableFileParser.scala	92.59%	🍏
PgFunctionFileParser.scala	78.59%	❌
package.scala	64.41%	❌
GenericFileParser.scala	50%	❌
DBTableIndex.scala	43.51%	❌
DBFunctionFromSource.scala	38.24%	❌
MapImplicits.scala	33.33%	❌
OptionImplicits.scala	31.82%	❌
DBTable.scala	24.3%	❌
FileReader.scala	20.73%	❌
TableColumnDrop.scala	0%	❌
TableColumnAdd.scala	0%	❌
SchemaGrant.scala	0%	❌
Ultet.scala	0%	❌
DBTableInsert.scala	0%	❌
DBTableAlter.scala	0%	❌
DBSchema.scala	0%	❌
DBItem.scala	0%	❌
DBFunctionFromPG.scala	0%	❌
TableColumnNotNullDrop.scala	0%	❌
TableColumnDefaultSet.scala	0%	❌
TablePrimaryKeyDrop.scala	0%	❌
TableColumnCommentDrop.scala	0%	❌
TablePrimaryKeyAdd.scala	0%	❌
TableColumnDefaultDrop.scala	0%	❌
TableColumnCommentSet.scala	0%	❌
TableIndexDrop.scala	0%	❌
TableIndexCreate.scala	0%	❌
DBProperties.scala	0%	❌
package.scala	0%	❌
SqlExecutor.scala	0%	❌
SourceFileType.scala	0%	❌
TaskConfig.scala	0%	❌
DBTableFromPG.scala	0%	❌
DatabaseDef.scala	0%	❌
SchemaDef.scala	0%	❌
DBAppModel.scala	0%	❌
TableCreation.scala	0%	❌
TableEntry.scala	0%	❌
TableOwnership.scala	0%	❌
SetImplicits.scala	0%	❌

Total Project Coverage	22.4%	🍏

[benedeki]

This item depends on:

• Creating table class from Postgres system files #13
  By Dependent Issues.