Add support for SPI Parameters

[mirromutth]

It resolves #164 .

Check list:

• Rename dev.miku.r2dbc.mysql.Parameter into MySqlParameter to avoid user confusion and naming conflicts
• Add io.r2dbc.spi.Parameter support in DefaultCodecs, just like r2dbc-postgresql
• Add encoding type support in Codecs, e.g. LongCodec.canEncode(Long.class, doubleValue), LongCodec.encode(Long.class, doubleValue, context)
• Add integration test cases for io.r2dbc.spi.Parameter

[linghengqian]

What's blocking this PR from being merged?

[ls-urs-keller]

@mirromutth I haven't checked the PRs before doing mine. I have a slightly different implementation in #249 the name "clash" is contained to the codec, so maybe renaming your class is not necessary.