chore(RepresentationTheory): generalize most of FDRep to commutative rings

[jcommelin]

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[github-actions]

PR summary bcff648f44

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

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Declarations diff

+ instance (V : FDRep R G) : AddCommGroup V := by
+ instance (V : FDRep R G) : Module R V := by
+ instance (V : FDRep R G) : Module.Finite R V := by
+ instance : CoeSort (FDRep R G) (Type u)
+ instance : ConcreteCategory (FDRep R G) (Action.HomSubtype _ _) := inferInstance
+ instance : HasForget₂ (FDRep R G) (Rep R G)
+ instance : LargeCategory (FDRep R G) := inferInstance
+ instance : Linear R (FDRep R G) := by infer_instance
+ instance : Preadditive (FDRep R G) := inferInstance
- instance (V : FDRep k G) : AddCommGroup V := by
- instance (V : FDRep k G) : Module k V := by
- instance : CoeSort (FDRep k G) (Type u)
- instance : ConcreteCategory (FDRep k G) (Action.HomSubtype _ _) := inferInstance
- instance : HasForget₂ (FDRep k G) (Rep k G)
- instance : LargeCategory (FDRep k G) := inferInstance
- instance : Linear k (FDRep k G) := by infer_instance
- instance : Preadditive (FDRep k G) := inferInstance

You can run this locally as follows

## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for script/declarations_diff.sh contains some details about this script.

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No changes to technical debt.

You can run this locally as

./scripts/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

[smorel394]

Suggested change

	/-- The category of finite dimensional `k`-linear representations of a monoid `G`. -/
	/-- The category of finite dimensional `R`-linear representations of a monoid `G`. -/

[smorel394]

I pointed out that line but there's similarly some ks that should be Rs on lines 83 and 144. I'm not sure about the doc string at the beginning of the file, since the case where R is a field is the most important case.