epic: street editing good enough to release for basic streets

[kfarr]

ultimate goal: as a user I can take a stroad example and then change in to a safer configuration -->

• [x] ability to change street to another segment type preset
• [x] #971
• [x] #975
• [x] #976
• [x] #990
• [x] https://github.com/3DStreet/3dstreet/pull/998 striping is automatically created from a street object (striping can also be defined in the street object)
• [x] #1002
• [x] align start by default
• [x] justify >> align, final issue is underground dirtbox sizing and alignment upon child segment changes https://github.com/3DStreet/3dstreet/pull/1007
• [x] labels https://github.com/3DStreet/3dstreet/pull/1008
• [x] deploy
• [x] #978
• [x] #979
• [x] component delete
• [x] component add -- only for street segment, allow adding only street-generated-*
• [x] #980
• [x] option to duplicate a segment NOT inside of the lane
• [x] ensure undo works for delete, insert, move
• [x] (later) striping align (instead of side) oneOf: left, center, right
• [ ] #977 - refresh striping after managed street change
• [ ] #1030
• [ ] #988
• [ ] #832
• [ ] ability to move segment from old index to new index
• [ ] consider alternate conversion of entire street to manual instead of component-based