feat: add SNMP trap receiver provider.

[rahulrajesh21]

Closes #2112
/claim #2112

📑 Description

The SNMP Provider allows Keep to receive and process SNMP traps from network devices, converting them into alerts within the Keep platform.

• Implemented SNMP Provider with trap receiver functionality
• Convert SNMP traps to Keep alerts
• Configure custom severity mappings for different OIDs

Timeline.1.mp4

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed

ℹ Additional Information

The SNMP Provider includes OID translation for human-readable alerts. Added dependencies: pysnmp, pysnmp-lextudio, pyasn1.

[vercel]

@rahulrajesh21 is attempting to deploy a commit to the KeepHQ Team on Vercel.

A member of the Team first needs to authorize it.

[CLAassistant]

All committers have signed the CLA.

[shahargl]

minor changes needed, all in all looks surprisingly good.

one thing however - for such "complicated" providers we usually asks contributors to create some script/doc to help us maintain it - mainly a way to reproduce an end-to-end like the video you sent

[shahargl]

@rahulrajesh21 ?

[rahulrajesh21]

@shahargl Almost done with e2e test.

[rahulrajesh21]

@shahargl can you review my e2e testing.