Have the sync algorithm feature use a configurable mount directory.

[golanha]

Currently when running an algorithm with value dev in options mode attribute, folder algorithm_unique_folder is mounted.
For customers who buid their algorithm docker bythemselves, and put their code in a different folder, we'd like to have the mounted foder be configurable in the algorithm definition.

options:{
"devMode": true,
"devFolder": "/home/myuser/myalgosourcecode"
}

[RonShvarz]

• Add sync start to support turning existing algorithms to dev mode
• Add stop to remove devmode
• Add E2E tests
• Fix message at end of "sync start" to use placeholder <localAlgoFolder>