chore: enable the preimage flag for paritydb

[lemmih]

Summary of changes

Changes introduced in this pull request:

• Recently, we've moved to only store IPLD data in ParityDB. This let's us turn on more aggressive optimizations.
• This PR enables the preimage flag which improves performance in very specific situations.

Benchmarks done using storage-optimized droplets with 16GiB of RAM and 300 GiB of SSD.

	Import time (seconds)	Peak RSS
Importing a mainnet snapshot	1563 ± 132	8.76GiB ± 0.3GiB
Re-importing the same snapshot	2837 ± 30	7.24 GiB ± 0.01 GiB
Re-importing with the preimage flag	1837 ± 16	5.73 GiB ± 0.13 GiB

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

[lemmih]

Note: This invalidates existing databases. They have to be manually cleaned. We probably want a better way of handling this.

[lemmih]

Data from Hubert's machine (which is much more powerful than the droplets):

main first
2023-06-19T10:32:55.032075Z  INFO forest_filecoin::daemon::daemon: Imported snapshot in: 313s

main second
2023-06-19T10:58:05.854629Z  INFO forest_filecoin::daemon::daemon: Imported snapshot in: 1462s

preimage first
2023-06-19T11:05:32.713542Z  INFO forest_filecoin::daemon::daemon: Imported snapshot in: 307s 

preimage second
2023-06-19T11:26:56.904707Z  INFO forest_filecoin::daemon::daemon: Imported snapshot in: 1233s

preimage helps a bit but the performance penalty is still extreme.

[LesnyRumcajs]

Specs for reference:

         .';:cccccccccccc:;,.            --------------------
      .;cccccccccccccccccccccc;.         OS: Fedora release 38 (Thirty Eight) x86_64
    .:cccccccccccccccccccccccccc:.       Host: Z790 UD AX
  .;ccccccccccccc;.:dddl:.;ccccccc;.     Kernel: 6.3.6-200.fc38.x86_64
 .:ccccccccccccc;OWMKOOXMWd;ccccccc:.    Uptime: 6 hours, 16 mins
.:ccccccccccccc;KMMc;cc;xMMc:ccccccc:.   Packages: 2159 (rpm), 2 (flatpak)
,cccccccccccccc;MMM.;cc;;WW::cccccccc,   Shell: fish 3.6.1
:cccccccccccccc;MMM.;cccccccccccccccc:   Resolution: 3840x2160
:ccccccc;oxOOOo;MMM0OOk.;cccccccccccc:   DE: GNOME 44.1
cccccc:0MMKxdd:;MMMkddc.;cccccccccccc;   WM: Mutter
ccccc:XM0';cccc;MMM.;cccccccccccccccc'   WM Theme: Adwaita
ccccc;MMo;ccccc;MMW.;ccccccccccccccc;    Theme: Adwaita [GTK2/3]
ccccc;0MNc.ccc.xMMd:ccccccccccccccc;     Icons: Adwaita [GTK2/3]
cccccc;dNMWXXXWM0::cccccccccccccc:,      Terminal: tmux
cccccccc;.:odl:.;cccccccccccccc:,.       CPU: 13th Gen Intel i9-13900KF (32) @ 5.500GHz
:cccccccccccccccccccccccccccc:'.         GPU: NVIDIA GeForce RTX 4090
.:cccccccccccccccccccccc:;,..            Memory: 5867MiB / 64119MiB

Disk is https://www.kingston.com/en/ssd/kc3000-nvme-m2-solid-state-drive (7G/s write/read)