fix: simplify feemarket based on AIMD paper (backport #94) (#98)

* fix: simplify feemarket based on AIMD paper (#94)

* rename properly and add bounds

* format proto

* refactor

* tip fe

* bye target

* func

* fix

* params

* ante

* bet

* fix all

(cherry picked from commit 7b6193a)

# Conflicts:
#	tests/e2e/go.mod
#	tests/e2e/go.sum
#	tests/e2e/setup.go
#	tests/integration/integration_test.go
#	x/feemarket/ante/expected_keepers.go
#	x/feemarket/ante/suite/suite.go

* fix

* ok

* fix

* fix

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Co-authored-by: Alex Johnson <[email protected]>