Add new 7 instruments

[Lunga001]

Description of the issue/feature this PR addresses

Adding the following 7 Instruments

1. 2-Dimensional-CSV(generic.two_dimension.csv)
2. Agilent - Masshunter(agilent.masshunter.masshunter.csv)
3. Shimadzu - GCMS-QP2010 SE(shimadzu.gcms.qp2010se.txt)
4. Shimadzu GCMS-TQ8030 GC/MS/MS(shimadzu.gcms.tq8030.txt)
5. Shimadzu ICPE-9000 Multitype(shimadzu.icpe.multitype.txt)
6. Shimadzu HPLC-PDA Nexera-I LC2040C(shimadzu.nexera.LC2040C)
7. Shimadzu LC MS/MS Nexera X2 LCMS-8050(shimadzu.nexera.LCMS8050)

Current behavior before PR

Desired behavior after PR is merged

Add 7 Instruments and write one doctest for all Instruments.
Please note that I've made a new folder called instruments under test/files/ and added the tests files there.

The reason I did not add a test file for an instrument like Abbott - m2000 Real Time is that Abbott - m2000 Real Time uses different form variables like "filename" instead of "instrument_results_file" and all these 7 instruments are using the default instrument pt template which is "exportimport/instruments/instrument.pt"

--
I confirm I have tested this PR thoroughly and coded it according to PEP8
and Plone's Python styleguide standards.

[xispa]

The title of the Pull Request is not self-explanatory and the description has links that redirect to a private issue tracker. If there is no issue in senaite.core's tracker related with this PR, please explain the functionality you are trying to accomplish in the description directly, with as much detail as possible. Also, avoid the use of IDs in titles and/or description that do not make sense inside senaite context.

I can see this PR contains multiple instrument interfaces. Please, much better if you open a PR for every single instrument interface instead of a PR with all them at once. It makes the whole thing very difficult to review.

[Lunga001]

Thank you for the review @xispa and please forgive me for the long and non-descriptive PR. I will start with making the PRs for each instrument.

[xispa]

Hi @Lunga001 if you update the title and description with as much detail as possible, I can review this PR all at once (but only this time). Not my intention to sound rude, but we are applying the same strict rules to all PRs, without exception, on behalf the quality of the code and thus, the quality of the product afterwards. Thanks!

[Lunga001]

Thanks @xispa, much appreciated, will do right next time.

[xispa]

Thanks @Lunga001 !

[xispa]

This line is not explanatory about the changes included in this Pull Request. Please, add a line for each instrument with the number of Pull Request, like:

- #617 Instrument import interface: Shimadzu GCMS-QP2010 SE
- #617 Instrument import interface: Shimadzu GCMS-TQ8030 GC/MS/MS
- #617 Instrument import interface: Shimadzu ICPE-9000 Multitype
...

This way is easy later to find out which instruments are supported and since when, just by doing a quick search for "Instrument import interface".

[xispa]

Good catch!