fix setting endian before creating request will create invalid request

[aldas]

• fix setting endian before creating request will create invalid request
• add ability to set delay between sending the request and receiving request (helps with serial devices)
• add support for serial devices in examples/index.php

[codecov[bot]]

Codecov Report

Patch coverage: 96.96% and project coverage change: -0.04 :warning:

Comparison is base (09bd467) 98.72% compared to head (fb0332c) 98.69%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #144 +/- ## ============================================ - Coverage 98.72% 98.69% -0.04% - Complexity 887 892 +5 ============================================ Files 69 69 Lines 2277 2291 +14 ============================================ + Hits 2248 2261 +13 - Misses 29 30 +1 ``` | Flag | Coverage Δ | | |---|---|---| | unittests | `98.69% <96.96%> (-0.04%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#carryforward-flags-in-the-pull-request-comment) to find out more. | [Impacted Files](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.) | Coverage Δ | | |---|---|---| | [src/Network/SerialStreamCreator.php](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#diff-c3JjL05ldHdvcmsvU2VyaWFsU3RyZWFtQ3JlYXRvci5waHA=) | `93.75% <ø> (ø)` | | | [src/Network/BinaryStreamConnection.php](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#diff-c3JjL05ldHdvcmsvQmluYXJ5U3RyZWFtQ29ubmVjdGlvbi5waHA=) | `96.29% <75.00%> (-1.71%)` | :arrow_down: | | [src/Network/BinaryStreamConnectionBuilder.php](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#diff-c3JjL05ldHdvcmsvQmluYXJ5U3RyZWFtQ29ubmVjdGlvbkJ1aWxkZXIucGhw) | `100.00% <100.00%> (ø)` | | | [src/Network/BinaryStreamConnectionProperties.php](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#diff-c3JjL05ldHdvcmsvQmluYXJ5U3RyZWFtQ29ubmVjdGlvblByb3BlcnRpZXMucGhw) | `100.00% <100.00%> (ø)` | | | [...Packet/ModbusFunction/MaskWriteRegisterRequest.php](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#diff-c3JjL1BhY2tldC9Nb2RidXNGdW5jdGlvbi9NYXNrV3JpdGVSZWdpc3RlclJlcXVlc3QucGhw) | `100.00% <100.00%> (ø)` | | | [...acket/ModbusFunction/MaskWriteRegisterResponse.php](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#diff-c3JjL1BhY2tldC9Nb2RidXNGdW5jdGlvbi9NYXNrV3JpdGVSZWdpc3RlclJlc3BvbnNlLnBocA==) | `100.00% <100.00%> (ø)` | | | [src/Packet/ModbusFunction/ReadCoilsRequest.php](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#diff-c3JjL1BhY2tldC9Nb2RidXNGdW5jdGlvbi9SZWFkQ29pbHNSZXF1ZXN0LnBocA==) | `100.00% <100.00%> (ø)` | | | [...ket/ModbusFunction/ReadHoldingRegistersRequest.php](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#diff-c3JjL1BhY2tldC9Nb2RidXNGdW5jdGlvbi9SZWFkSG9sZGluZ1JlZ2lzdGVyc1JlcXVlc3QucGhw) | `100.00% <100.00%> (ø)` | | | [...acket/ModbusFunction/ReadInputDiscretesRequest.php](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#diff-c3JjL1BhY2tldC9Nb2RidXNGdW5jdGlvbi9SZWFkSW5wdXREaXNjcmV0ZXNSZXF1ZXN0LnBocA==) | `100.00% <100.00%> (ø)` | | | [...acket/ModbusFunction/ReadInputRegistersRequest.php](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.#diff-c3JjL1BhY2tldC9Nb2RidXNGdW5jdGlvbi9SZWFkSW5wdXRSZWdpc3RlcnNSZXF1ZXN0LnBocA==) | `100.00% <100.00%> (ø)` | | | ... and [8 more](https://app.codecov.io/gh/aldas/modbus-tcp-client/pull/144?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Martti+T.) | |

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