Bellingham heights Improvements v2.0

Changelog v2.0
- New WA-9 Road from Van Zandt to WA-20.
- Also some new roads near Bellingham, near WA-20.
- Some more road sign improvements on WA-20 near I-5 and on SCS's road which has unhidden in the mod.
- Improvements on default SCS's landscapes for better looking from WA-9 and other new roads.

Here is short description of what has been done:
- New semi-fake town "Middle Fork Valley"
- Some part of "Mosquito Lake road" near Middle Fork Nooksack river.
- A little bit improved unhidden road from Bellingham to Deepgrove company (some road signs were added or improved)
- Road signs edited near Everett, WA ("Darwing" writings on road navigation signs changed to "Boeing" ones)
- The roads between Bellingham and Deepgrove company, also roads near Astoria, Coos Bay, detour rough road on OR58 are made visible on the map.
- Parking spot near a house in Redmond, OR (this town are not visible on map, it located to north from Bend, OR. I made it just for myself use for playing roleplay situation of living there).

Work 1.36, 1.37