[Merchants] Add Merchant Data Bucket capability. (#2160)

* [Merchants] Add Merchant Data Bucket capability.
- Allows server operators to limit merchant items based on data bucket values and comparisons.
- Adds 3 columns, bucket_name, bucket_value, and bucket_comparison to merchantlist table.
- Bucket is checked based on GetBucketKey()-bucket_name.
- Buckets are mass loaded when using the merchant so it's not a database call per item, just a grouping of all their buckets from the start.
- This is a nearly year old pull request redone for master.
- bucket_comparison Values are as follows:
        - bucket_comparison 0: bucket_name == bucket_value
        - bucket_comparison 1: bucket_name != bucket_value
        - bucket_comparison 2: bucket_name >= bucket_value
        - bucket_comparison 3: bucket_name <= bucket_value
        - bucket_comparison 4: bucket_name > bucket_value
        - bucket_comparison 5: bucket_name < bucket_value
        - bucket_comparison 6: bucket_name is any of  pipe(|)-separated bucket_value
        - bucket_comparison 7: bucket_name is not any of  pipe(|)-separated bucket_value
        - bucket_comparison 8: bucket_name is between first and second value of pipe(|)-separated bucket_value
        - bucket_comparison 9: bucket_name is not between first and second value of pipe(|)-separated  bucket_value

* Revert query change.

zone/client.h

@@ -1652,6 +1652,9 @@ public:
 	// rate limit
 	Timer m_list_task_timers_rate_limit = {};
 
+	std::map<std::string,std::string> GetMerchantDataBuckets();
+	bool CheckMerchantDataBucket(uint8 bucket_comparison, std::string bucket_value, std::string player_value);
+
 protected:
 	friend class Mob;
 	void CalcItemBonuses(StatBonuses* newbon);