DevFast.Net.Text 0.1.0

 1. New feature - namespace DevFast.Net.Text added, containing
	A. Static Class TextConst with
			- static readonly variable Utf8NoBom defined as UTF8Encoding(false)

 2. New feature - namespace DevFast.Net.Text.Json added, containing
	A. enum JsonType
	B. readonly struct RawJson(JsonType type, byte[] value)
	C. class JsonConst containing
			- various const byte values necessary to parse json
			- static readonly instances of various JsonNamingPolicy
			- const minimum buffer size for JsonReader
			- interface IJsonArrayReader for json parsing
			- static class JsonReader to create byte-stream based IJsonArrayReader instance

 3. New feature - namespace DevFast.Net.Text.Json.Utf8 added, containing
	A. class JsonArrayReader that implements IJsonArrayReader, reads json array element 1 by 1 from stream other than MemoryStream
	B. class MemJsonArrayReader that implements IJsonArrayReader, reads json array element 1 by 1 from MemoryStream

 4. New feature - namespace DevFast.Net.Text.Json.NamingPolicy added, containing
	A. class JsonIdemCaseNamingPolicy that implements JsonNamingPolicy, to keep field names unchanged
	B. class JsonLongSnakeCaseNamingPolicy that implements JsonNamingPolicy, to change field names to long snake case (i.e. WriteIO to write_i_o)
	C. class JsonSnakeCaseNamingPolicy that implements JsonNamingPolicy, to change field names to simple snake case (i.e. WriteIO to write_io)