[Mercs] Add Mercenary Support (#2745)

* [Mercs] Add Mercenary Support

# Notes
- Adds `--merc-tables` support to database dumper.
- Adds Mercenary-based repositories.
- Adds required SQL `2023_01_15_merc_data.sql` to insert the tables for those who don't already have them.
- Adds optional SQL `2023_01_15_merc_liaisons.sql` to change NPCs to the Mercenary Liaison class optionally.

* Inline.

* Trim tables_to_dump output

Co-authored-by: Akkadius <akkadius1@gmail.com>

common/database/database_dump_service.h

@@ -55,6 +55,8 @@ public:
 	void SetDumpStateTables(bool dump_state_tables);
 	bool IsDumpBotTables() const;
 	void SetDumpBotTables(bool dump_bot_tables);
+	bool IsDumpMercTables() const;
+	void SetDumpMercTables(bool dump_bot_tables);
 
 private:
 	bool        dump_all_tables             = false;
@@ -70,6 +72,7 @@ private:
 	bool        dump_output_to_console      = false;
 	bool        dump_drop_table_syntax_only = false;
 	bool        dump_bot_tables             = false;
+	bool        dump_merc_tables            = false;
 	std::string dump_path;
 	std::string dump_file_name;
 
@@ -78,6 +81,7 @@ private:
 	std::string GetBaseMySQLDumpCommand();
 	std::string GetPlayerTablesList();
 	std::string GetBotTablesList();
+	std::string GetMercTablesList();
 	std::string GetSystemTablesList();
 	std::string GetStateTablesList();
 	std::string GetContentTablesList();