Remove Ocean dependency, use dtext instead

[Geod24]

Should reduce our footprint a bit.

[Geod24]

Before:

-rwxr-xr-x 2 geod24 staff 79769112 Mar 23 15:30 agora

After:

-rwxr-xr-x 2 geod24 staff 79285712 Mar 23 15:28 agora

Not as much as I'd hoped but still 500 kb of binary size gone, and hopefully a few module ctors.

[Geod24]

Integration will have to be forced (and Faucet fixed)

[codecov[bot]]

Codecov Report

Merging #3220 (023d7ef) into v0.x.x (e2c9637) will increase coverage by 8.25%. The diff coverage is 82.00%.

@@            Coverage Diff             @@
##           v0.x.x    #3220      +/-   ##
==========================================
+ Coverage   79.16%   87.42%   +8.25%     
==========================================
  Files         212      166      -46     
  Lines       19116    16927    -2189     
==========================================
- Hits        15134    14798     -336     
+ Misses       3982     2129    -1853     

Flag	Coverage Δ
integration	?
unittests	87.42% <82.00%> (+0.04%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
source/agora/common/Ensure.d	100.00% <ø> (ø)
source/agora/network/RPC.d	1.51% <ø> (ø)
source/agora/node/Runner.d	0.00% <ø> (ø)
source/agora/stats/Collector.d	100.00% <ø> (ø)
source/agora/stats/StatFormatter.d	100.00% <ø> (ø)
source/agora/test/Base.d	80.31% <ø> (-0.20%)	:arrow_down:
source/agora/test/Crypto.d	100.00% <ø> (ø)
source/agora/test/InvalidBlockSigByzantine.d	96.29% <ø> (ø)
source/agora/utils/Log.d	47.65% <33.33%> (-0.70%)	:arrow_down:
source/agora/utils/SCPPrettyPrinter.d	91.72% <33.33%> (ø)
... and 68 more

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[Geod24]

All CIs (but integration) are green so going ahead with this.