CSUB-852: Update System.remark weights

[zacharyfrederick]

I think this is the proper way to do this.

In csub-819 it was decided that 0.0000000015 CTC = 1 Byte.

0.0000000015 * 10^18 (credo) = 1_500_000_000

To go from Length to weight use a constant multiplier of 1_500_000_000. Previously it was a 1:1 mapping using a 1st degree polynomial

[codecov-commenter]

Codecov Report

Merging #1381 (e833c82) into dev (1e9eade) will increase coverage by 56.30%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##              dev    #1381       +/-   ##
===========================================
+ Coverage   13.68%   69.98%   +56.30%     
===========================================
  Files          31      107       +76     
  Lines        1001    12559    +11558     
  Branches      128      128               
===========================================
+ Hits          137     8790     +8653     
- Misses        864     3769     +2905     

Files	Coverage Δ
runtime/src/lib.rs	17.00% <ø> (ø)
runtime/src/version.rs	0.00% <ø> (ø)

... and 74 files with indirect coverage changes

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