feat: cleanup app_context

[Freyskeyd]

Description

In order to gain more visibility and ease the refactor process on the tce I splitted the app-context into different file

PR Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added or updated tests that comprehensively prove my change is effective or that my feature works

[codecov]

Codecov Report

Merging #252 (9c73f88) into main (9d1089f) will increase coverage by 0.48%.
The diff coverage is 80.06%.

❗ Current head 9c73f88 differs from pull request most recent head 86f208b. Consider uploading reports for the commit 86f208b to get more accurate results

@@            Coverage Diff             @@
##             main     #252      +/-   ##
==========================================
+ Coverage   53.14%   53.62%   +0.48%     
==========================================
  Files         198      183      -15     
  Lines        9990     9264     -726     
==========================================
- Hits         5309     4968     -341     
+ Misses       4681     4296     -385     

Impacted Files	Coverage Δ
crates/topos-tce/src/app_context.rs	88.46% <ø> (+15.56%)	⬆️
crates/topos-tce/src/config.rs	0.00% <0.00%> (ø)
crates/topos-tce/src/lib.rs	0.79% <ø> (-8.95%)	⬇️
crates/topos-tce/src/app_context/network.rs	76.47% <76.47%> (ø)
crates/topos-tce/src/app_context/protocol.rs	77.55% <77.55%> (ø)
crates/topos-tce/src/app_context/api.rs	83.33% <83.33%> (ø)
crates/topos-tce/src/app_context/message.rs	100.00% <100.00%> (ø)
crates/topos-tce/src/metrics.rs	100.00% <100.00%> (ø)

... and 86 files with indirect coverage changes

[gruberb]

👍