fix #232: [FR] support l template

[lasconic]

• Fixes [FR] support l template #232
• Tests added/updated.
• ./check.sh run and eventual issues fixed.
• Updated CONTRIBUTORS.md, if not already done in the past.

[sourcery-ai]

Sourcery Code Quality Report

Merging this PR leaves code quality unchanged.

Quality metrics	Before	After	Change
Complexity	111.80 ⛔	112.67 ⛔	0.87 👎
Method Length	551.67 ⛔	553.00 ⛔	1.33 👎
Working memory	67.08 ⛔	67.08 ⛔	0.00
Quality	7.26% ⛔	7.26% ⛔	0.00%

Other metrics	Before	After	Change
Lines	890	892	2

Changed files	Quality Before	Quality After	Quality Change
scripts/lang/fr/init.py	7.26% ⛔	7.26% ⛔	0.00%

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
scripts/lang/fr/init.py	last_template_handler	130 ⛔	827 ⛔	25 ⛔	1.96% ⛔	Refactor to reduce nesting. Try splitting into smaller methods. Extract out complex expressions

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