Create a new target for generating CDL documents

[JayHuLBL]

This issue is to create a new target in make file for generating CDL documents. By running command like make generate-cdl-documentation will generate CDL documents based on a specific commit in Buildings library repo.

[mwetter]

The Word output also need to be corrected to address the items below.

• [ ] Don't output any protected items (protected parameter, protected blocks). Protected data type are irrelevant for the Elementary Blocks in CDL.
• [ ] Don't output the "Connections" section because they are irrelevant for the Elementary Blocks.
• [ ] Don't output the "Validation" packages because these won't be part of a standard.
• [ ] Correct "apos;input Boolean' as connector" as in Buildings.Controls.OBC.CDL.Interfaces.docx.
• [ ] Remove extra space before "]" and add ";" in outputs such as in `humidity [Min = 0 (adjustable) Max = 1 (adjustable) ]"
• [ ] Buildings.Controls.OBC.CDL.Types has invalid hyperlinks (within this Word document, I think the hyperlinks can be removed as they usually point to the parameters of the same block being described, e.g., they are right next to each other).
• [ ] Figures are missing (they seem to have a placeholder but do not show in Word). See Buildings.Controls.OBC.CDL.Continuous.Hysteresis. For some blocks, the figures are essential for the documentation.
• [ ] Use https rather than http for hyperlinks such as for http://obc.lbl.gov

[JayHuLBL]

Current progress (79a03ea):

• [x] Don't output any protected items (protected parameter, protected blocks). Protected data type are irrelevant for the Elementary Blocks in CDL.
• [x] Don't output the "Connections" section because they are irrelevant for the Elementary Blocks.
• [x] Don't output the "Validation" packages because these won't be part of a standard.
• [x] Correct "apos;input Boolean' as connector" as in Buildings.Controls.OBC.CDL.Interfaces.docx.
• [x] Remove extra space before "]" and add ";" in outputs such as in `humidity [Min = 0 (adjustable) Max = 1 (adjustable) ]"
• [x] Use https rather than http for hyperlinks such as for http://obc.lbl.gov
• [ ] Buildings.Controls.OBC.CDL.Types has invalid hyperlinks (within this Word document, I think the hyperlinks can be removed as they usually point to the parameters of the same block being described, e.g., they are right next to each other).

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• [ ] Figures are missing (they seem to have a placeholder but do not show in Word). See Buildings.Controls.OBC.CDL.Continuous.Hysteresis. For some blocks, the figures are essential for the documentation. It seems that the figure can show in the docx, but the format is not ideal.

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