Added events to all of the core Hyperdrive flows

[jalextowle]

When thinking about supporting various types of integrations and considering the gas cost of adding events, it seemed best to add events to the core functions. This will make it trivial to pull down realized price information, information about open trader positions, and changes in LP positions.

[github-actions]

Hyperdrive Gas Benchmark

Benchmark suite	Current: 4f036d2	Previous: 69d4a19	Deviation	Status
addLiquidity: min	711 gas	711 gas	0%	🟰
addLiquidity: avg	44884 gas	44668 gas	0.4836%	🚨
addLiquidity: max	82408 gas	81028 gas	1.7031%	🚨
checkpoint: min	492 gas	492 gas	0%	🟰
checkpoint: avg	23044 gas	23044 gas	0%	🟰
checkpoint: max	33513 gas	33513 gas	0%	🟰
closeLong: min	637 gas	637 gas	0%	🟰
closeLong: avg	45705 gas	43798 gas	4.3541%	🚨
closeLong: max	80843 gas	79240 gas	2.0230%	🚨
closeShort: min	616 gas	616 gas	0%	🟰
closeShort: avg	37136 gas	35545 gas	4.4760%	🚨
closeShort: max	80392 gas	78750 gas	2.0851%	🚨
initialize: min	667 gas	667 gas	0%	🟰
initialize: avg	139799 gas	138216 gas	1.1453%	🚨
initialize: max	141296 gas	139696 gas	1.1453%	🚨
openLong: min	685 gas	685 gas	0%	🟰
openLong: avg	107671 gas	105277 gas	2.2740%	🚨
openLong: max	149220 gas	147584 gas	1.1085%	🚨
openShort: min	727 gas	727 gas	0%	🟰
openShort: avg	142803 gas	142042 gas	0.5358%	🚨
openShort: max	208468 gas	206459 gas	0.9731%	🚨
removeLiquidity: min	547 gas	547 gas	0%	🟰
removeLiquidity: avg	58828 gas	60944 gas	-3.4720%	✅
removeLiquidity: max	113193 gas	111079 gas	1.9032%	🚨

This comment was automatically generated by workflow using github-action-benchmark.

[coveralls]

Coverage: 81.877% (+0.4%) from 81.491% when pulling 4f036d2 on jalextowle/hyperdrive/events into 69d4a19 on main.

[aleph-v]

Looks good to me