Split spec.md into sub files to be able to handle the terms and definitions separately

[henkvancann]

Diff-tool comparison of generated specifications: https://henkvancann.github.io/tswg-acdc-specification/ vs https://trustoverip.github.io/tswg-acdc-specification.

Result is the following and is OK (tool: https://editor.mergely.com/):

51d50
< <!-- file name: header.md -->
71d69
< <!-- file name: foreword.md -->
76d73
< <!-- file name: introduction.md -->
88d84
< <!-- file name: doc-features.md -->
93d88
< <!-- file name: doc-features.md -->
103d97
< <!-- file name: doc-features.md -->
108d101
< <!-- file name: doc-features.md -->
111d103
< <!-- file name: doc-features.md -->
114d105
< <!-- file name: terms-and-definitions.md -->
200d190
< <!-- file name: acdc-structure.md -->
351d340
< <!-- file name: acdc-variants.md -->
558d546
< <!-- file name: top-level-acdc-sections.md -->
2368d2355
< <!-- file name: disclosure-mechanisms-and-exploitation-protection.md -->
2393d2379
< <!-- file name: exploitation-protection-mechanisms.md -->
2446d2431
< <!-- file name: issuance-and-presentation-exchange-ipex.md  -->
2451c2436
< <p>This IPEX <a class="term-reference" href="#term:ipex">IPEX</a> protocol leverages important features of ACDCs and ancillary protocols such as CESR [<a path-0="github.com"path-1="trustoverip"path-2="tswg-acdc-specification"href="https://github.com/trustoverip/tswg-acdc-specification" >1</a>], SAIDs [<a path-0="github.com"path-1="trustoverip"path-2="tswg-cesr-specification"href="https://github.com/trustoverip/tswg-cesr-specification" >3</a>], and CESR-Path proofs <a class="term-reference" href="#term:proof-id">Proof-ID</a> as well as Ricardian Contracts [<a path-0="en.wikipedia.org"path-1="wiki"path-2="Ricardian_contract"href="https://en.wikipedia.org/wiki/Ricardian_contract" >43</a>] and Graduated Disclosure (Metadata, Partial, Selective, Full) to enable Contractually Protected Disclosure. Contractually Protected Disclosure includes both Chain-Link Confidential [<a path-0="papers.ssrn.com"path-1="sol3"path-2="papers.cfm"href="https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2045818" >44</a>] and Contingent Disclosure <a class="term-reference" href="#term:acdc">ACDC</a>.</p>
---
> <p>This IPEX <a class="term-reference" href="#term:ipex">IPEX</a> protocol leverages important features of ACDCs and ancillary protocols such as CESR [<a path-0="github.com"path-1="trustoverip"path-2="tswg-acdc-specification"href="https://github.com/trustoverip/tswg-acdc-specification" >1</a>], SAIDs [<a path-0="github.com"path-1="trustoverip"path-2="tswg-cesr-specification"href="https://github.com/trustoverip/tswg-cesr-specification" >3</a>], and CESR-Path proofs <a class="term-reference" href="#term:proof-id">Proof-ID</a> as well as Ricardian Contracts [<a path-0="en.wikipedia.org"path-1="wiki"path-2="Ricardian_contract"href="https://en.wikipedia.org/wiki/Ricardian_contract" >43</a> and Graduated Disclosure (Metadata, Partial, Selective, Full) to enable Contractually Protected Disclosure. Contractually Protected Disclosure includes both Chain-Link Confidential [<a path-0="papers.ssrn.com"path-1="sol3"path-2="papers.cfm"href="https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2045818" >44</a> and Contingent Disclosure <a class="term-reference" href="#term:acdc">ACDC</a>.</p>
2588d2572
< <!-- file name: transaction-event-logs-tels-as-acdc-state-registries.md -->
2930d2913
< <!-- file name: annex.md -->
4027,4028d4009
< <h2 id="bibliography"><a class="toc-anchor" href="#bibliography" >§</a> Bibliography</h2>
< <!-- file name: bibliography.md -->
4308d4288
< <li><a href="#bibliography" >Bibliography</a></li>
4317c4297
<                 <script>window.specConfig = {"title":"Authentic Chained Data Containers (ACDC)","spec_directory":"./spec/","output_path":"./docs","markdown_paths":["header.md","foreword.md","introduction.md","doc-features.md","terms-and-definitions.md","acdc-structure.md","acdc-variants.md","top-level-acdc-sections.md","disclosure-mechanisms-and-exploitation-protection.md","exploitation-protection-mechanisms.md","issuance-and-presentation-exchange-ipex.md","transaction-event-logs-tels-as-acdc-state-registries.md","annex.md","bibliography.md"],"logo":"https://raw.githubusercontent.com/trustoverip/logo-assets/master/logos/ToIP-Logo-Color-SolidDimensional-Horizontal-LightOnDark.svg","logo_link":"https://github.com/trustoverip/tswg-acdc-specification","katex":true,"source":{"host":"github","account":"trustoverip","repo":"tswg-acdc-specification"},"destination":"./docs/"}</script>
---
>                 <script>window.specConfig = {"title":"Authentic Chained Data Containers (ACDC)","spec_directory":"./spec/","output_path":"./docs","markdown_paths":["spec.md"],"logo":"https://raw.githubusercontent.com/trustoverip/logo-assets/master/logos/ToIP-Logo-Color-SolidDimensional-Horizontal-LightOnDark.svg","logo_link":"https://github.com/trustoverip/tswg-acdc-specification","katex":true,"source":{"host":"github","account":"trustoverip","repo":"tswg-acdc-specification"},"destination":"./docs/"}</script>