Update optogenetics

[XX-Yin]

Pull Request instructions:

• Please follow the update protocol
• Answer the questions below in detail. Your responses will be emailed to experimenters.
• If the experimenters must do anything new, provide detailed step by step instructions on the wiki
• If computer maintainers need to manually update anything, provide detailed step by step instructions
• Use markdown syntax in order for your comments to be rendered reliably in the email: "1." instead of "1)", use four spaces for indents.
• If you use the keyword "skip email" in the title, it will skip the email updates
• Merges from "develop" into "production_testing" should use the keyword "production merge" in the title for reliable indexing of updates
• Merges from "production_testing" into "main" should use the keyword "update main"

Describe changes:

1. Switch Save button color to magenta when laser calibration changes.
2. Clear laser calibration data in the optogenetics window after pressing Start button.
3. Set protocol to constant protocol in calibration panel when copying pulse protocol from optogenetic panel.
4. Fixed an error when loading optogenetic frequency of pulse protocol.
5. Set different colors for different optogenetic conditions during visualization.
6. Add new field MinOptoInterval to set minimum interval between two optogenetic trials.
7. Add minimum_opto_interval to NWB

What issues or discussions does this update address?

see "Describe changes" section for details.

Describe the expected change in behavior from the perspective of the experimenter

1. Optogenetic experiments will display different colors depending on the optogenetic conditions.
2. The default minimum interval between two optogenetics trials is 0 trials.

Describe any manual update steps for task computers

No

Was this update tested in 446/447?

tested in 323_EPHYS3

[XX-Yin]

@alexpiet @hanhou This is ready for review.