feat: v2 overall stats

[gusin13]

This pr

1. exposes v2 overall stats and v2 staker stats endpoint
2. consumes and ingests from queue (active/unbonding) for now
3. increments overall/staker stats in active message
4. decrements overall/staker stats in unbonding message
5. TODO: should handle slashed as well ( in this case we will need to update stats for all slashed delegations)
6. i removed finality porvider stats and related methods as i don't have clarity yet what data we need, will add it in future prs.
7. also removes local queue schema etc, api will use the queue-client now
8. TODO: there is lot of confusing code for v1 queue client and the shared package, we should remove it (not imp right now)
9. also disables gh workflow "lint test" job to avoid triggering unit tests, some mess up happening in v1 tests

[jrwbabylonlab]

i'm not 100% following this statement. why is the order matters when you have the stats_lock table?

[gusin13]

just copied this code from v1 with comments, forgot to remove

[gusin13]

		var stakerStats v2dbmodel.V2StakerStatsDocument
		stakerStatsFilter := bson.M{"_id": stakerPkHex}
		stakerErr := stakerStatsClient.FindOne(ctx, stakerStatsFilter).Decode(&stakerStats)
		if stakerErr != nil {
			return nil, stakerErr
		}
		if stakerStats.TotalDelegations == 1 {
			upsertUpdate["$inc"].(bson.M)["total_stakers"] = 1
		}

checked code again so when updating overall stats, it needs to update a attribute total_stakers which can only be computed if we query the staker stats table first