Packages still missing precompiles

[untoreh]

• [x] Watchers
• [x] Sim/Paper/Live mode
• [ ] Cli
• [ ] Engine
• [ ] Executors
• [ ] Instances
• [ ] Collections
• [x] OrderTypes
• [ ] Simulations
• [x] Stats
• [x] Strategies
• [x] Plotting
• [x] Exchanges
• [x] Fetch

[panbonker]

other precompile directives are in the main PingPong pkg since the other pkgs are mostly middleware