Add Chinese translation to the Construct Addon

[wed150]

• Add langs/zh_CN.lang file
• Change script files to adapt to Chinese

[ForestOfLight]

Thank you for translating Construct to Chinese!
First, thanks for catching these issues and fixing them:

1. The relative path that was too long for the Raycaster in BlockInfo.
2. The missing block sound error.
3. The "isntance" typo.

Please revert all changes that aren't in the RP/texts folder or aren't the fixed issues mentioned above. This is for consistency and not misleading users:

Many types of strings are made to be translated, but block states do not fall into that category. Block states are hardcoded values and players may need to read them as their lower-level values. Also, since it is hardcoded, it would conflict with the other translations of this addon.
Using the ItemStack's localizationKey when looking at a block permutation may be inaccurate. It is better to wait until v26.0 when the permutation's type translation key can be used directly rather than using the ItemStack's translation key.
Could you explain the dimension translation issue? Though I see that it's currently not implemented, using the localizationKey for each dimension should work in theory.