Split CGeneralTextHandler file into 1 file per class form

All text processing code is now located in lib/texts.
No changes other than code being moved around and adjustment of includes

Moved without changes:
Languages.h           -> texts/Languages.h
MetaString.*          -> texts/MetaString.*
TextOperations.*      -> texts/TextOperations.*

Split into parts:
CGeneralTextHandler.* -> texts/CGeneralTextHandler.*
                      -> texts/CLegacyConfigParser.*
                      -> texts/TextLocalizationContainer.*
                      -> texts/TextIdentifier.h

lib/texts/CGeneralTextHandler.h

@@ -0,0 +1,107 @@
+/*
+ * CGeneralTextHandler.h, part of VCMI engine
+ *
+ * Authors: listed in file AUTHORS in main folder
+ *
+ * License: GNU General Public License v2.0 or later
+ * Full text of license available in license.txt file, in main folder
+ *
+ */
+#pragma once
+
+#include "TextLocalizationContainer.h"
+
+VCMI_LIB_NAMESPACE_BEGIN
+
+class CGeneralTextHandler;
+
+/// Small wrapper that provides text access API compatible with old code
+class DLL_LINKAGE LegacyTextContainer
+{
+	CGeneralTextHandler & owner;
+	std::string basePath;
+
+public:
+	LegacyTextContainer(CGeneralTextHandler & owner, std::string basePath);
+	std::string operator [](size_t index) const;
+};
+
+/// Small wrapper that provides help text access API compatible with old code
+class DLL_LINKAGE LegacyHelpContainer
+{
+	CGeneralTextHandler & owner;
+	std::string basePath;
+
+public:
+	LegacyHelpContainer(CGeneralTextHandler & owner, std::string basePath);
+	std::pair<std::string, std::string> operator[](size_t index) const;
+};
+
+/// Handles all text-related data in game
+class DLL_LINKAGE CGeneralTextHandler: public TextLocalizationContainer
+{
+	void readToVector(const std::string & sourceID, const std::string & sourceName);
+
+	/// number of scenarios in specific campaign. TODO: move to a better location
+	std::vector<size_t> scenariosCountPerCampaign;
+
+public:
+	LegacyTextContainer allTexts;
+
+	LegacyTextContainer arraytxt;
+	LegacyTextContainer primarySkillNames;
+	LegacyTextContainer jktexts;
+	LegacyTextContainer heroscrn;
+	LegacyTextContainer overview;//text for Kingdom Overview window
+	LegacyTextContainer colors; //names of player colors ("red",...)
+	LegacyTextContainer capColors; //names of player colors with first letter capitalized ("Red",...)
+	LegacyTextContainer turnDurations; //turn durations for pregame (1 Minute ... Unlimited)
+
+	//towns
+	LegacyTextContainer tcommands, hcommands, fcommands; //texts for town screen, town hall screen and fort screen
+	LegacyTextContainer tavernInfo;
+	LegacyTextContainer tavernRumors;
+
+	LegacyTextContainer qeModCommands;
+
+	LegacyHelpContainer zelp;
+	LegacyTextContainer lossConditions;
+	LegacyTextContainer victoryConditions;
+
+	//objects
+	LegacyTextContainer advobtxt;
+	LegacyTextContainer restypes; //names of resources
+	LegacyTextContainer randsign;
+	LegacyTextContainer seerEmpty;
+	LegacyTextContainer seerNames;
+	LegacyTextContainer tentColors;
+
+	//sec skills
+	LegacyTextContainer levels;
+	//commanders
+	LegacyTextContainer znpc00; //more or less useful content of that file
+
+	std::vector<std::string> findStringsWithPrefix(const std::string & prefix);
+
+	int32_t pluralText(int32_t textIndex, int32_t count) const;
+
+	size_t getCampaignLength(size_t campaignID) const;
+
+	CGeneralTextHandler();
+	CGeneralTextHandler(const CGeneralTextHandler&) = delete;
+	CGeneralTextHandler operator=(const CGeneralTextHandler&) = delete;
+
+	/// Attempts to detect encoding & language of H3 files
+	static void detectInstallParameters();
+
+	/// Returns name of language preferred by user
+	static std::string getPreferredLanguage();
+
+	/// Returns name of language of Heroes III text files
+	static std::string getInstalledLanguage();
+
+	/// Returns name of encoding of Heroes III text files
+	static std::string getInstalledEncoding();
+};
+
+VCMI_LIB_NAMESPACE_END