[DOCUMENTATION] Add dev docs

[ElBe-Plaq]

Description

Added source code documentation.

Closes #42.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change is a documentation update
• Something else

Checklist:

• My code follows the style guidelines of this project
• 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
• My changes generate no new errors or linter warnings
• My changes generate no problems with other code
• I have added tests that prove my fix is effective or that my feature works
• New and existing tests passed locally with my changes (mkdocs serve)

[mergify]

Checks failed

Checks:

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MegaLinter	✅
label	✅
CommitCheck	✅

| docs/readthedocs.org:i-language-rust | ❌ |

[github-actions]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	4		0	0.18s
✅ BASH	bash-exec	1		0	0.03s
✅ BASH	shellcheck	1		0	0.06s
⚠️ BASH	shfmt	1		1	0.03s
✅ COPYPASTE	jscpd	yes		no	2.16s
✅ CSS	stylelint	3		0	1.29s
✅ EDITORCONFIG	editorconfig-checker	64		0	0.16s
✅ HTML	djlint	1		0	0.74s
⚠️ HTML	htmlhint	1		1	0.3s
⚠️ JAVASCRIPT	standard	1		1	2.75s
⚠️ MAKEFILE	checkmake	1		1	0.03s
⚠️ MARKDOWN	markdownlint	34		11	1.14s
⚠️ MARKDOWN	markdown-link-check	34		2	7.45s
⚠️ MARKDOWN	markdown-table-formatter	34		1	0.34s
✅ REPOSITORY	checkov	yes		no	13.3s
✅ REPOSITORY	devskim	yes		no	0.78s
✅ REPOSITORY	dustilock	yes		no	0.03s
✅ REPOSITORY	gitleaks	yes		no	0.36s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ REPOSITORY	kics	yes		no	18.51s
✅ REPOSITORY	secretlint	yes		no	1.12s
✅ REPOSITORY	syft	yes		no	0.35s
✅ REPOSITORY	trivy	yes		no	3.45s
✅ RUST	clippy	yes		no	22.65s
⚠️ SPELL	cspell	67		219	23.5s
✅ YAML	prettier	15		0	0.99s
✅ YAML	v8r	15		0	12.47s
✅ YAML	yamllint	15		0	0.5s

See detailed report in MegaLinter reports
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[mergify]

Merging pull request

Checks:

Name	Status
label	✅
Summary	✅
MegaLinter	✅
pre-commit.ci - pr	✅
docs/readthedocs.org:i-language-rust	✅
CommitCheck	✅