calculate tx the lifecycle duration

[georgehao]

1. Purpose or design rationale of this PR

Calculate the tx median lifecycle duration.

Background is here: https://www.notion.so/scrollzkp/7ba4e2226275414692228f6332d85621?v=d8d35fc59bae4ad1acf48fdfc616934e&p=2a41bd0b70d54211a7b34e1ea766b14a&pm=s

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3. Deployment tag versioning

Has the version in params/version.go been updated?

• This PR doesn't involve a new deployment, git tag, docker image tag, and it doesn't affect traces
• Yes

4. Breaking change label

Does this PR have the breaking-change label?

• This PR is not a breaking change
• Yes

[HAOYUatHZ]

here we don;t distinguish the "end time" for

1. tx is included
2. tx is dropped

then how can it serve your need? we wouldn't know a "lifecycle duration" is for being included or being dropped

[georgehao]

here we don;t distinguish the "end time" for

1. tx is included
2. tx is dropped

then how can it serve your need? we wouldn't know a "lifecycle duration" is for being included or being dropped

tx is included we can know this, i think
tx is dropped yes, can't get this. this will affect the p90 statistics, for p50 it's ok