## Description
This PR reintroduces the changes from #2266 with a change to *not* reset the transport
when initializing the shared client.
Doing so was removing the retry and other middlewares
and also resulting in throttled requests being masked as success
Also - we now decorate our download traffic with an ISV tag as recommended [here](https://learn.microsoft.com/en-us/sharepoint/dev/general-development/how-to-avoid-getting-throttled-or-blocked-in-sharepoint-online#how-to-decorate-your-http-traffic)
## Does this PR need a docs update or release note?
- [ ] ✅ Yes, it's included
- [x] 🕐 Yes, but in a later PR
- [ ] ⛔ No
## Type of change
<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [x] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup
## Issue(s)
<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* #2266
## Test Plan
<!-- How will this be tested prior to merging.-->
- [ ] 💪 Manual
- [ ] ⚡ Unit test
- [x] 💚 E2E
## Description
onedrive currently constructs a new http client
for every file it downloads. This causes the OS
to generate extra sockets, and hang onto them
after the download is complete. Replacing these
one-off clients with a singular, re-used client-
which is the behavior and standard suggested
for golang http clients- minimizes system
resource consumption.
## Does this PR need a docs update or release note?
- [x] ⛔ No
## Type of change
- [x] 🐛 Bugfix
## Issue(s)
* closes#2262
## Test Plan
- [x] 💪 Manual
- [x] ⚡ Unit test
- [x] 💚 E2E
## Description
Go does not allow importing code from a file marked as package main into another file.
## Does this PR need a docs update or release note?
- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No
## Type of change
- [ ] 🌻 Feature
- [x] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [ ] 💻 CI/Deployment
- [x] 🧹 Tech Debt/Cleanup
## Issue(s)
* closes#2026
## Test Plan
- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E
